Plumbing help

[Fdnavy]

I am in the midst of setting up a 90 gallon tank. It has 2 1" Stockman standpipes draining into a Trigger 36 sump. I plan on using a jebeo DC 12000 return pump. Is 1 1" return line to the tank with a lock line nozzle enough or should I have more than 1?

 

[Bufordrm11]

I'm setting up a 75g and I'm trying to see what in pvc to use for my plumbing can someone help me please?

 

[kmbyrnes]

1" pvc will be fine in either case.
I run the same pump on a 100 and a 125.
Remember that most of your turnover flow should come from power heads.

 

[WWIII]

I use one return line in my 200 gallon tank. Having 2 return lines doesn't hurt anything, but imo isn't necessary. The pump is going to cycle nearly the same amount of water through regardless. Powerheads will create as much in tank flow you want/need, to where an extra return line wouldn't be necessary.

 

[Fdnavy]

Thank you everyone. Since I have already the parts I'm gonna try plumbing 2 returns. Thanks for the help.