New 90 P (90 x 50 x 50) tank setup

[JayP]

Excited to see how your filter turns out. My recommendation would be to have nothing upstream/ prior to your DC pump, and to arrange filtration after the pump. It would be a pain to prime otherwise.

But you also have to consider how all the filtration after the pump effects head pressure and the pump's resulting performance. Even a 90 elbow is like adding a foot of head height, so I imagine pushing water through even a single filter is far more than that. Would be interesting to experiment with the pump on both ends and measure flow. I'm about to do a flow test on my next tank because I'm debating what filtration setup to use. Maybe I'll try to test this out.

 

[Noahspapa]

I understand both points and appreciate the input. I’m thinking of keeping the pump as stated, but adding a tee just before the pump with a “prime” valve to allow me to open the line just before the pump and fill the input stream with water. May never need to use it but just in case.

 

[Noahspapa]

And then flex hose from pump to inline heater, flex hose from heater to tee, flex hose from perpendicular output of tee to return Lily pipe #1. Then flex hose from straight output of tee to horizontal reactor, short hose to regulator valve, then flex hose to return Lily pipe #2. Sound right?