Setting up overflow on 220

[James1973]

so I came across this 220 gallon acrylic tank at a steal of a price. It has a center overflow with 4 holes drilled 3 for 1" pipe and 1 for 3/4". My question is whats the best way to plumb it and what type of sump would you go with?

 

[celebrist]

Bean or Herbie

 

[James1973]

Ok so if I go with bean most of what I see has 2 drains and a return. What would I use the 3rd for and how do I go about determining the height of pipes

 

[celebrist]

I run a durso setup so I am not the one to ask, sorry

 

[DN328]

Ok so if I go with bean most of what I see has 2 drains and a return. What would I use the 3rd for and how do I go about determining the height of pipes

If you go BA, use could use 3 straight pipes - it will work just fine. Or you could use two for a Herbie. The siphon drain should be at least 5-6" below the overflow water level and the trickle at the water level. Honestly you can run the BA the same way but having a third dry e-drain.

I'm not sure why they had a single 3/4 - for a return? Usually there would be a larger that you could split for returns.

Do some reading on the drain methods and ask questions if you have more.

 

[James1973]

Sounds good thanks for the response when I run into more questions ill be sure yo ask

 

[DDK]

basically that but you have to figure out which hole you want to use for a return. Drilled into the overflow is the hole a 3/4? or a 1 inch hole?

Whats the over flow box dimensions?
Width = 2.5 inches?
Length = 8 inches?
Teeth size 1 inch tall?
Rough math says that the weir overflow rate is 24-25 gpm which is 1440gph

Using a 1 inch pipe for a return at 25gpm is roughly 20 psi which is kinda high but not horrible. But easiest way is to throw some pipes in, fill the tank, and run a pump you got to see how the overflow behaves.

 

[James1973]

Its 12"x4 1/2" with 1" teeth the hole drilled is 1 1/4" so im assuming that be for 3/4 pipe

 

[DDK]

huh idk why its a 1 1/4 inch hole for a return which normally would be meant for a 3/4 pipe. The overflow itself can handle +2000 gph easily. Honestly dont believe the math which came out to 3780 gph. Having a 2200 gph pump through a one inch will be 40 psi, trying to move that much water through a 3/4 inch would be roughly 55 psi which is about the strength of a garden hose on full blast. But of course theres head loss and loss through elbows which brings it down to roughly 1600-1800 after the elbows to get it back to the tank.

A 1 inch pipe can drain 960 gph and you have two with one being a silent drain like a durso so,
1 inch fully submerged 960gph
1 inch durso ~400-500 gph
1 inch emergency 0 gph

leaving you with 1500 gph through the 3/4 which is 25 gpm giving you roughly 20-25 psi through the 3/4 return which isnt too high of pressure. Its almost a 7x turn over rate so it seems logical. Maybe dude before you had the weird tentacle lookin thing to spit the flow. Wanted the pressure to reach both ends of the tank?

 

[James1973]

I'm guessing a 3/4 bulkhead would fit in a 1 1/4" hole. Thats what I ended up getting was the weird tentacle output to divide the flow. Its actually brand new was $600 off for a "blemish" that you really have to look for to see. Would it plausible to run a jebao 12000 on it i have one laying around. And what would you say for a sump wet/dry maybe a k1 moving bed? Sorry for all the questions new to the sump world and plumbing.