I have my refug on top of my canopy. I pump water from sump to refug and then it gravity feeds back to main tank.(which is about a foot and a half drop) The problem im haveing is when the water enters the tank it makes alot of small bubbles that pop and are causing alot of salt creep in canopy. I ve had the pipe underneith the water ive had it above when water goes back into the tank still get the bubbles. Ive installed a valve to slow down water flow but i still get the bubbles. Any one have anyideas ???
try this !! add a T to the end of your return but instead of it being horizonal make it so it vertical and the top of the T being an inch or so over the water line and the end down a few inches this way the air can only escape out the top and let the water flow down !! this should work if ya have the room !!