Looking at this with a lot of interest. I have a 75G to be setup with a FX5 and I was thinking a manifold as well with parallel lines going to an inline Hydor 300W and an Ista max mix co2 reactor, with maybe another line for a UV unit. I have a standard 75G stand as well with not much vertical space in it. I had saved up some pics that I found online, maybe on TPT, maybe some place else. I am attaching them, hopefully the guy doesn't mind.Attachment 669025Attachment 669033Attachment 669041
I did see this one, and from others I've seen they all use the same basic design which is to use tee's and regular elbows......but I'm no Simple Jack
the FX6 is rated at 925GPH for the pump, but a little closer look into their specs and they also mention that with the media installed it only moves 563GPH.
one of my goals here is to keep that flow rate "unchanged" and adding a bunch of plumbing on the output will most certainly affect it, which is why I'm using 45* elbows, 90* sweep elbows and wye fittings, to mitigate sudden changes in fluid direction.
I also don't like the idea of using tubing to mount the Hydors because it will add further restrictions where you transfer from PVC-barb-hose-barb-Hydor so I've opted instead to thread those in. The 5/8" model of Hydor has a thread that is close enough to 1/2" NPT to work.
It's really not a 1/2" NPT thread but it will fit that thread size with a bit of caution and sealing.
I custom built my stand and as such it's a bit "oddly" designed. I have about 28" of height inside in certain spots, and in one of the pictures you can see the 2x4 at the bottom that the manifold is sitting on.
Well, that 2x4 will allow me to put a piece of plywood across the bottom to sit the FX6 on leaving me with a space under the FX6 to lay some plumbing on the stand bottom and save some height..... I know that doesn't make much sense without a picture so I'll try and get one as soon as I can.
I do also want to add a UV sterilizer but I haven't yet found a decently priced and reasonably sized one. the AquaUV 80 would probably suit my needs, but it's a bit cost prohibitive.