What size HOB overflow?

[Ian56]

Hello all!
I am new to the hobby and just had a quick technical question I wanted to check before purchasing the wrong size equipment. I have a 75 gallon tank that I am adding a 40 gallon sump system to. The tank can not be drilled so I will need to get a hang on back overflow box. Are there any recommendations on size / brand etc. specifically one that has a good track record of breaking siphon during power outages or components in place to help avoid something going wrong and causing a flood!
Thank you to anyone with experience and insight!!

 

[Impala67]

Hello all!
I am new to the hobby and just had a quick technical question I wanted to check before purchasing the wrong size equipment. I have a 75 gallon tank that I am adding a 40 gallon sump system to. The tank can not be drilled so I will need to get a hang on back overflow box. Are there any recommendations on size / brand etc. specifically one that has a good track record of breaking siphon during power outages or components in place to help avoid something going wrong and causing a flood!
Thank you to anyone with experience and insight!!

I highly recommend this one. It’s probably my favorite hob I’ve ever bought for sure good quality and the costumer service is excellent!!

 

[machome79]

How much clearance is on that in regards to the trim/ brace on tank? I'm looking for someone as well but my tank is 135 gallons

 

[Impala67]

How much clearance is on that in regards to the trim/ brace on tank? I'm looking for someone as well but my tank is 135 gallons

What goes in the water and what hangs on back is separated about 2 1/2 inches apart. I have a rimmed tank and it fits perfectly with extra room!!

 

[machome79]

Thank you! Is it pretty silent and did you have to do any flood proofing?

 

[Impala67]

Thank you! Is it pretty silent and did you have to do any flood proofing?

I didn’t do any flood proofing because there really isn’t any real threat of it with this. It’s silent enough it’s in my bedroom and I sleep just fine. The siphon break tube I replaced with a larger one/ longer because it was to small.

 

[machome79]

nice! thank you

 

[Impala67]

nice! thank you

No problem!!! If you don’t mind me asking what size tank are you using this for? Because I have the smallest size and if you have a bigger than 75 I would recommend a larger sized one!!