Help with return pump and pipe size

[Tuffloud1]

I need some help determining which return pumps to go with.

Display is 262 gallons, frag tank will be 40 gallons.

I will be running 2 return pumps with 2 separate 1 inch pvc runs going to the display as well as reducing down to 3/4 and going to a remote frag tank (8 foot horizontal run).

Each run will have 4 elbows on the 1 inch pipe and a couple elbows on the 3/4 pipe.

Vertical run - 6 feet per run

Which pump should I choose and will it be sufficient if my goal is around 1000 gph to the display and 150 gph or so to the frag tank?

Pump choices are -


DCP-10000 (2640 gph)

DCP-13000 (3645 gph)

 

[Gareth elliott]

I would always pick the bigger dc pump and dial down. Its almost impossible to measure exactly the flow needed before adding a pump to a system.

 

[Tuffloud1]

My main concern is the 1” pvc can only handle so much flow. Was wanting to know if it is worth getting the larger pump (running 2).

I am limited with the 1” pipe

 

[Gareth elliott]

I think 1 inch pipe at around 50 psi is 2200 gph and 2 inch is 7600 gph.

 

[Tuffloud1]

I'm going to have to go with the DCP10000 because I can't fit 2 of the DCP13000 in my return section.

 

[DeepintheReef]

I run the DCP10k at lowest setting on my 65 with 1” pipe and split into two 3/4” returns. Probably 5’ of head pressure. I only have the 10k because it was cheaper than a smaller model at the time of purchase. Been running two years service free and problem free in saltwater. Hopefully I’ll get a few more years out of it.

It can still crank quite a bit of water when I turn it all the way up. Two of these should be sufficient for what you want so long as you’re not relying solely on return pumps for your tank turnover.

 

[Tuffloud1]

Thanks for the insight.

Yeah, I wish I could fit 2 of the DCP13000, but I think 2 of the DCP10000 will be a better fit.

It probably wouldn’t be a good thing anyway because the return section water would be practically all displaced by those 2 huge pumps. Seems like this would cause my ATO to kick on way more frequently.

 

[Dj City]

Shame you can't fit thre larger pump.
I have a 15000 and a 10000 DCP. 15000 for my return and 10000 for manifold.

 

[Tuffloud1]

Shame you can't fit thre larger pump.
I have a 15000 and a 10000 DCP. 15000 for my return and 10000 for manifold.

My return section is 8.75″ x 17.5″.

Do you think 2 of the 15000 would fit?

 

[Dj City]

My return section is 8.75″ x 17.5″.

Do you think 2 of the 15000 would fit?

Nope
The 15000 is a large pump. It's just slightly smaller than the 20000 but it's larger than the 10000.

I was able to fit one 15000 and one 10000 in my sump but I had to remove both intake screens.