Bean Animal overflow in 90g Reef Ready

[Captcarl7]

Longtime reader, figured I would finally create an account. Background is I currently have a reef ready 90g tank, with a single built in overflow box and 3 drilled holes in the bottom of the tank. (2) 1 inch bulkheads & (1) 3/4" bulkhead. It is currently set up with a herbie style overflow, with the full syphon and the open drain on the 1" lines, and the return line from the pump coming through 3/4" bulkhead.

I'm in the process of rebuilding my sump, and was thinking about moving to the bean overflow while im messing around with it. My quesion is how would I arrange this?

Would I use the 3/4" for the full syphon line, open drain, or the emergency drain?
Will this work with the bottom drill/built in overflow box? I read somewhere that there is concern about the overflow restricting flow?

Note that my pump is pushing 500gph at the top of the tank (measured with flow meter).

I've dug around searching, but cant seem to find an answer for where the 3/4" line should be used. Any help would be awesome!

 

[Crabs McJones]

Welcome to R2R!

#WelcometoR2R
Is there a reason you want to switch to the bean animal? Is the herbie giving you problems? I would probably do one of the one inches as my primary drain, the 3/4 as the secondary and the other 1 inch as the emergency. In the event of an emergency blockage I would want the bigger pipe for the emergency. You could look into re-drilling the 3/4 to a 1 inch, i've heard of other people attempting this, but have never actually seen the results.....Would you then be drilling another hole for the return, or putting the return on the back wall on the opposite side of the tank?

 

[Captcarl7]

No specific reason, I just figured I would add the extra safety drain while I am messing around with the plumbing. I would be moving the return line to a 3/4" line that ran behind the tank.

I have no desire to do any additional drilling lol, so If the bean won't work with the existing holes I will probably just stick with what I currently have running.

 

[Crabs McJones]

No specific reason, I just figured I would add the extra safety drain while I am messing around with the plumbing. I would be moving the return line to a 3/4" line that ran behind the tank.

I have no desire to do any additional drilling lol, so If the bean won't work with the existing holes I will probably just stick with what I currently have running.

Sounds good You could do the bean in the way I described above, primary 1", secondary 3/4" and emergency 1"

 

[Captcarl7]

Sounds good You could do the bean in the way I described above, primary 1", secondary 3/4" and emergency 1"

Awesome! Thanks.

I need to get around to posting my DIY reef controller app in the other section. Should be finishing that up this week.

 

[Crabs McJones]

Awesome! Thanks.

I need to get around to posting my DIY reef controller app in the other section. Should be finishing that up this week.

I look forward to reading it

 

[ca1ore]

I would always use the smallest drain as the primary. At a full siphon, a 3/4” drain will easily move 500 gph. That leaves the two 1” as your backups. An open channel will never move as much as a siphon.

BTW, a bean will only work if all three drains share a common body of water.

 

[Captcarl7]

I would always use the smallest drain as the primary. At a full siphon, a 3/4” drain will easily move 500 gph. That leaves the two 1” as your backups. An open channel will never move as much as a siphon.

BTW, a bean will only work if all three drains share a common body of water.

They all share a common body of water. All (3) holes are drilled under/enter the same (single) overflow box.