Overflow came without Holes.

Should I just silicone the overflow into the spot I want it permanently when I drill it?
Well silicone doesn't bond acrylic to glass. However, it works. I silicones mine one...you have to make sure everything is clean...and lie the tank down to glue it onto the side. Side that you're glueing down.

There's some other alternatives that I'm not familiar with adhesive-wise.
 
Well silicone doesn't bond acrylic to glass. However, it works. I silicones mine one...you have to make sure everything is clean...and lie the tank down to glue it onto the side. Side that you're glueing down.

There's some other alternatives that I'm not familiar with adhesive-wise.
Oh ok, ill just glue it then, do you know of any aquarium safe glues?
 
Buddy man -

You are really going too quick.

That box needs to sent back.
And you need a pre drilled box. Modular marine or crystal reef aquatics are good examples.

From your posts it feels like you are new to the process. There is nothing wrong with that. It’s just that it means you have that much more to look out. So the fewer the manual items in your setup the better.

Get a predrilled full overflow box setup with inside box and outside drain etc.
then if you really want to drill the glass of your tank based on the direction of the overflow box manufacturer customized to their box. And take it from there. (Read a ton on drilling a tank before you do that. You need to know the right steps to drill and also which glass is drillable and which one shatters).

Everyone here will always be happy to help and answer questions. Don’t rush please. A wrong drill now that is unnecessary and may eventually leak - will be extremely difficult and expensive to mitigate.
 
Buddy man -

You are really going too quick.

That box needs to sent back.
And you need a pre drilled box. Modular marine or crystal reef aquatics are good examples.

From your posts it feels like you are new to the process. There is nothing wrong with that. It’s just that it means you have that much more to look out. So the fewer the manual items in your setup the better.

Get a predrilled full overflow box setup with inside box and outside drain etc.
then if you really want to drill the glass of your tank based on the direction of the overflow box manufacturer customized to their box. And take it from there. (Read a ton on drilling a tank before you do that. You need to know the right steps to drill and also which glass is drillable and which one shatters).

Everyone here will always be happy to help and answer questions. Don’t rush please. A wrong drill now that is unnecessary and may eventually leak - will be extremely difficult and expensive to mitigate.
My tank isnt tempered at all, it can be drilled, ive watched 100 drilling videos. Ill look at kore overflows, but I dont see why it differs from the one I have.
 
Does anyone else think this overflow is a bad idea?
Not a bad idea per say, but if you're going to use this overflow, I'd rather drill them separately and not glue them first. Huge risk of the silicone not keeping the acrylic to the glass later and letting water sip through = Leak. Drill them separately and then put a gasket between the glass and the overflow on the inside. :)
You "should" have (from inside-out) Bulkhead flange - gasket - overflow - gasket - glass - nylon gasket - bulkhead nut.
 
Not a bad idea per say, but if you're going to use this overflow, I'd rather drill them separately and not glue them first. Huge risk of the silicone not keeping the acrylic to the glass later and letting water sip through = Leak. Drill them separately and then put a gasket between the glass and the overflow on the inside. :)
You "should" have (from inside-out) Bulkhead flange - gasket - overflow - gasket - glass - nylon gasket - bulkhead nut.
Yeah exactly my thoughts as well, thank you for the advice.
 
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I just received my overflow and it doesn't have holes in it. I was just wondering if thats normal or not

Most of the people commenting are suggesting a complete setup. This is just one part of a DIY. What you bought will work fine but it requires you to do some of the things that are already done with the full systems.

Nonetheless I have to drill through it correct?

yes

Anyone know if it matters how far the holes are away from eachother in the bean animal setup?

It will depend on your U pipe. What are you going to use? if you use 2 90's you can cut them down to make them take up less space.

Does acrylic need to be lubricated like glass? Also dumb question but, same size holes as aquarium holes correct?

No it doesn't but if you drill to fast it will start to melt and gum up the bit. I find a little water makes it easier or you can just stop and clean the bit if the teeth get clogged. it only take a few seconds.

Anyone know what kind of hole saw I'd need to drill through acrylic

any kind will work. Harbor freight has a kit with several sizes for around $10.

Does anyone have their return pump line straight into theit tank or does it hang above the tank? Or another hole drilled fo the return line? I heard on bulk reef supply said 3/4 inch is most common, but my pvc will be 1 and a half inch. What size should my return line be?

I would drill a return. The size is going to depend on the return pump. Do you have a pump yet? If so what model.

Do you need another bulkhead for that hole? Also if im using 1 and a half inch drain piping, should I use 1 inch return piping?

Yes. Also be aware that the hole size for a bulkhead is different than the size of the pipe that connects to it. BRS has the hole size listed for the different size bulkheads they sell. Other brands I have used have all worked using the size holes BRS suggest.

a diamond coated bit would work for acrylic?

It would but I would use a hole saw. Also the way I do it is cut a 1/4" piece of scrap the same size as my box. Drill a hole in the scrap the size I need for the bulkhead and in the location I want it. I then clamp this to the box as a guide to drill. Then I move it to the tank as a guide to drill the glass. That way everything lines up.

Do you agree with him then, saying I shoukd glue overflow on and drill through both?

I would not but different people do things different ways. I gasket in the proper place will never leak. However once installed it should never have to be removed but I would think it would be unneeded.

Okay, sounds good. Tank goes on its side for the drill correct

It doesn't matter but it is easier.

Does anyone else think this overflow is a bad idea?

I don't. I just think you need the rest of it.

Is it unheard to drill your own holes in your overflow?

Not at all.

I bought one of the commercial overflow systems recently. After looking at it and reading some post on it I sent it back. I built my own. So basically you are building your own but your need to decide what you want/need. Mine was for a small 56gal tank. I only need a couple hundred gallon turn over an hour. I used 3/4" return line. No pressure 3/4 can flow 660 GPH. I only used a 1" drain with a backup 1" drain. 1" no pressure can flow 960 GPH. I used 1 1/2" bulkhead going through the tank from the inside box to the outside box. I would always try to build to hand twice what I expect and be able to remove twice as much water as I can put in.

Here is a video and some pictures of a small tank I did last month. It is work perfect for me. I thought of doing a bean but didn't. If I had I would had need to make the outside box bigger.

 
Excellent!!


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Most of the people commenting are suggesting a complete setup. This is just one part of a DIY. What you bought will work fine but it requires you to do some of the things that are already done with the full systems.



yes



It will depend on your U pipe. What are you going to use? if you use 2 90's you can cut them down to make them take up less space.



No it doesn't but if you drill to fast it will start to melt and gum up the bit. I find a little water makes it easier or you can just stop and clean the bit if the teeth get clogged. it only take a few seconds.



any kind will work. Harbor freight has a kit with several sizes for around $10.



I would drill a return. The size is going to depend on the return pump. Do you have a pump yet? If so what model.



Yes. Also be aware that the hole size for a bulkhead is different than the size of the pipe that connects to it. BRS has the hole size listed for the different size bulkheads they sell. Other brands I have used have all worked using the size holes BRS suggest.



It would but I would use a hole saw. Also the way I do it is cut a 1/4" piece of scrap the same size as my box. Drill a hole in the scrap the size I need for the bulkhead and in the location I want it. I then clamp this to the box as a guide to drill. Then I move it to the tank as a guide to drill the glass. That way everything lines up.



I would not but different people do things different ways. I gasket in the proper place will never leak. However once installed it should never have to be removed but I would think it would be unneeded.



It doesn't matter but it is easier.



I don't. I just think you need the rest of it.



Not at all.

I bought one of the commercial overflow systems recently. After looking at it and reading some post on it I sent it back. I built my own. So basically you are building your own but your need to decide what you want/need. Mine was for a small 56gal tank. I only need a couple hundred gallon turn over an hour. I used 3/4" return line. No pressure 3/4 can flow 660 GPH. I only used a 1" drain with a backup 1" drain. 1" no pressure can flow 960 GPH. I used 1 1/2" bulkhead going through the tank from the inside box to the outside box. I would always try to build to hand twice what I expect and be able to remove twice as much water as I can put in.

Here is a video and some pictures of a small tank I did last month. It is work perfect for me. I thought of doing a bean but didn't. If I had I would had need to make the outside box bigger.

 
20190111_084504.jpg
20190111_084514.jpg
20190108_185052.jpg


Most of the people commenting are suggesting a complete setup. This is just one part of a DIY. What you bought will work fine but it requires you to do some of the things that are already done with the full systems.



yes



It will depend on your U pipe. What are you going to use? if you use 2 90's you can cut them down to make them take up less space.



No it doesn't but if you drill to fast it will start to melt and gum up the bit. I find a little water makes it easier or you can just stop and clean the bit if the teeth get clogged. it only take a few seconds.



any kind will work. Harbor freight has a kit with several sizes for around $10.



I would drill a return. The size is going to depend on the return pump. Do you have a pump yet? If so what model.



Yes. Also be aware that the hole size for a bulkhead is different than the size of the pipe that connects to it. BRS has the hole size listed for the different size bulkheads they sell. Other brands I have used have all worked using the size holes BRS suggest.



It would but I would use a hole saw. Also the way I do it is cut a 1/4" piece of scrap the same size as my box. Drill a hole in the scrap the size I need for the bulkhead and in the location I want it. I then clamp this to the box as a guide to drill. Then I move it to the tank as a guide to drill the glass. That way everything lines up.



I would not but different people do things different ways. I gasket in the proper place will never leak. However once installed it should never have to be removed but I would think it would be unneeded.



It doesn't matter but it is easier.



I don't. I just think you need the rest of it.



Not at all.

I bought one of the commercial overflow systems recently. After looking at it and reading some post on it I sent it back. I built my own. So basically you are building your own but your need to decide what you want/need. Mine was for a small 56gal tank. I only need a couple hundred gallon turn over an hour. I used 3/4" return line. No pressure 3/4 can flow 660 GPH. I only used a 1" drain with a backup 1" drain. 1" no pressure can flow 960 GPH. I used 1 1/2" bulkhead going through the tank from the inside box to the outside box. I would always try to build to hand twice what I expect and be able to remove twice as much water as I can put in.

Here is a video and some pictures of a small tank I did last month. It is work perfect for me. I thought of doing a bean but didn't. If I had I would had need to make the outside box bigger.

I gotta thank you for taking the time to answer all those questions. It's a huge help. What did you mean by "I need the rest of it." I have bulkheads and piping what else do I need? also I have a jebao return pump capable of 3645 gph. My overflow is rated for 3500 gph. I think I'd need at least 2 inch pipes to acquire that kind of flow though. Will I be okay with the extra gph in my return pump/overflow? Or do you suggest i send them back and get 2200 gph pump/overflow?
 
20190111_084504.jpg
20190111_084514.jpg
20190108_185052.jpg


Most of the people commenting are suggesting a complete setup. This is just one part of a DIY. What you bought will work fine but it requires you to do some of the things that are already done with the full systems.



yes



It will depend on your U pipe. What are you going to use? if you use 2 90's you can cut them down to make them take up less space.



No it doesn't but if you drill to fast it will start to melt and gum up the bit. I find a little water makes it easier or you can just stop and clean the bit if the teeth get clogged. it only take a few seconds.



any kind will work. Harbor freight has a kit with several sizes for around $10.



I would drill a return. The size is going to depend on the return pump. Do you have a pump yet? If so what model.



Yes. Also be aware that the hole size for a bulkhead is different than the size of the pipe that connects to it. BRS has the hole size listed for the different size bulkheads they sell. Other brands I have used have all worked using the size holes BRS suggest.



It would but I would use a hole saw. Also the way I do it is cut a 1/4" piece of scrap the same size as my box. Drill a hole in the scrap the size I need for the bulkhead and in the location I want it. I then clamp this to the box as a guide to drill. Then I move it to the tank as a guide to drill the glass. That way everything lines up.



I would not but different people do things different ways. I gasket in the proper place will never leak. However once installed it should never have to be removed but I would think it would be unneeded.



It doesn't matter but it is easier.



I don't. I just think you need the rest of it.



Not at all.

I bought one of the commercial overflow systems recently. After looking at it and reading some post on it I sent it back. I built my own. So basically you are building your own but your need to decide what you want/need. Mine was for a small 56gal tank. I only need a couple hundred gallon turn over an hour. I used 3/4" return line. No pressure 3/4 can flow 660 GPH. I only used a 1" drain with a backup 1" drain. 1" no pressure can flow 960 GPH. I used 1 1/2" bulkhead going through the tank from the inside box to the outside box. I would always try to build to hand twice what I expect and be able to remove twice as much water as I can put in.

Here is a video and some pictures of a small tank I did last month. It is work perfect for me. I thought of doing a bean but didn't. If I had I would had need to make the outside box bigger.

Also you said your overflow was diy, what is the point of the external box covering the pvc? Do I need that?
 
Also you said your overflow was diy, what is the point of the external box covering the pvc? Do I need that?
First I am at work so I can't take a picture of the inside. An second I may be completely wrong but I am not sure you under stand how the over flow works.

You have a box like the one you pictured inside the tank. Water in the tank only fills the box when the level is higher than the slots on the weir. If the pumps are turned off the tank will only drain down to the level of the bottom of the slots. Once water enters the box inside the tank it exits through your bulkheads and goes into a box on the outside of the tank. Depending on expected flow this is normally 1 or 2 1 1/2" bulkheads. In the bottom of the outside box you have your drain lines. There are several different ways to connect the lines. Most options are designed to and safety from the tank overflowing onto the floor and to minimize noise. Tour mentioned the bean animal. I am not expert on that style as I don't use it but I believe the way it is setup you have one drain line with a u or two 90's that is adjusted with a gate valve to be a full siphon. The second is similar but a little higher but the first dain takes all of the flow except a trickle or water than goes down the second. A third drain is just a straight pipe a overdose the other 2. Nothing should ever go down it. It is a safety in case the others get clogged. Normally it end above the water level in the sump so it make noise if water goes through it so you know something I'd wrong before you have a mess on you hands. So I did not see your outside box are all the fitting and pipe to make a complete system.
 
First I am at work so I can't take a picture of the inside. An second I may be completely wrong but I am not sure you under stand how the over flow works.

You have a box like the one you pictured inside the tank. Water in the tank only fills the box when the level is higher than the slots on the weir. If the pumps are turned off the tank will only drain down to the level of the bottom of the slots. Once water enters the box inside the tank it exits through your bulkheads and goes into a box on the outside of the tank. Depending on expected flow this is normally 1 or 2 1 1/2" bulkheads. In the bottom of the outside box you have your drain lines. There are several different ways to connect the lines. Most options are designed to and safety from the tank overflowing onto the floor and to minimize noise. Tour mentioned the bean animal. I am not expert on that style as I don't use it but I believe the way it is setup you have one drain line with a u or two 90's that is adjusted with a gate valve to be a full siphon. The second is similar but a little higher but the first dain takes all of the flow except a trickle or water than goes down the second. A third drain is just a straight pipe a overdose the other 2. Nothing should ever go down it. It is a safety in case the others get clogged. Normally it end above the water level in the sump so it make noise if water goes through it so you know something I'd wrong before you have a mess on you hands. So I did not see your outside box are all the fitting and pipe to make a complete system.
Ah yes, I am well aware of everything you said besides the outside box of the overflow, I thought the bulkheads drained directly into the pvc, I didn't know the outside box was necessary, actually is it necessary? If so do you know of anywhere I can purchase it? And to my other point is it okay if my return pump and overflow are rated for more flow than my pvc? Or would I have to get bigger pipes/or downgrade my return pump/overflow?
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

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