Sump Pump

[6seven8]

Hello,

I am new to this forum, this will be my first post here with many more to come.

I am starting a build on a 20 gal sump for my 65 gal show tank. I drilled 2 holes in the back of the tank and have 2 - 1" overflow lines going from the back of the tank into the sump.

I will have 5 ft of Head Pressure on the return pump.

I have a few questions;

1.) how would I calculate the GPM of the 2x1"inch overflow lines?

2.) What size return pump should i use? And how did you get this number?


Thank you for your help. I am looking forward to meeting members of the reef community.

David A.

 

[Forfend]

http://reefcentral.com/index.php/head-loss-calculator

 

[6seven8]

I appreciate the swift response - I don't understand this calculator too well though.

Also, Im wondering how to calculate it myself.

Thkns,

David A.

 

[6seven8]

how do i figure out the GPH of the overflow lines?

 

[Forfend]

Full siphons? You're looking at iirc 1500-1800 gph per 1" pipe. So 3000~ gph on full siphon.

 

[GrampaDon]

46X turnover thru the sump. [possibly] Way to go big dog.!!


Seriously ,how you have it now is way over kill. Maybe add some ball valves in case you need to adjust them a little.

 

[sjm817]

Do you have an overflow? What are you doing with those two lines?

 

[6seven8]

hi, thanks you for your responses.

i dont really see how it could be too much. i drilled the glass with 1 3/8" bits and put in 1" pipe lines. its not an overflow box. And im def going to add ball valves.

The two lines are going to be my built-in overflow. The holes are about 6" from the top of the tank so im going to add 90 elbows and make the top of them be my water level.

 

[kgross]

Full siphon you can get lots of flow, but you can't safely run the system with both drains in full siphon mode. With your drain setup to keep the tank quite, I would say you should be able to handle about 400-600 gph max.



Kim

 

[6seven8]

Its not full siphon. ill post pics asap