How to properly plumb a tank?

[globaldesigns]

Originally Posted by jostafew

Also it may be a good idea to change from rigid PVC to flex or preferably hose for the last leg to the return pump, that section of hose will limit the vibrations from the return pump transmitting through the rest of the system.

+1, very sound advice... I have done this, and agree, it does lower the vibration to all the plumbing. Also a nice way to disconnect everything from the main plumbing to the return pump, just in case you change pumps, and have to alter the connections. I have changed return pumps 3 times, and this had made things very easy.

[jostafew]

One other coment I forgot; do yourself a favor and orient the union so that the side with the groove and the rubber o-ring are on the bottom facing up, that way it won't be prone to falling out of the top half when you're trying to assemble things.