Gph flow new tank

[Silverni2]

Gonna be ordering a new tank this week it will have 2 1" holes drilled in the back for drains going into my sump there will be know overflow box or holes on the bottom. My question is I own 2 out of sump iwaki pumps that I will use for the 2 returns they each pump 750 gallons per hour is that to little or to much for the 120 gallon tank. Do u guys suggest hang on the back returns or should I have them drilled as well.
Thx

 

[d5332]

Here is my .02 cents...

Dont buy the tank until you have your plans finalize and said plans should include you selling those two pumps if they are functional and buying yourself a pump that puts out at least 1800 gallons and do some plumbing work to feed both returns with one single pump.

Secondly, if you intend to drill a tank then drill a tank, meaning drill both the drains and the returns.

 

[Silverni2]

Here is my .02 cents...

Dont buy the tank until you have your plans finalize and said plans should include you selling those two pumps if they are functional and buying yourself a pump that puts out at least 1800 gallons and do some plumbing work to feed both returns with one single pump.

Secondly, if you intend to drill a tank then drill a tank, meaning drill both the drains and the returns.

That's the kind of advice I'm looking for!
Thx