RO/DI Questions


Registered Reef Keeper
Hello all,

Just getting back into the hobby after a 5 year haitus. Got my ro/di unit up and running with new filters, membrane and di cartridge. I should mention, I have moved from an area with superb water to an area with fair water.
I have noticed that I am having trouble keeping the DI container filled with water. My setup has 50lbs of pressure, and a float valve in the receptacle tank to shut off when full. I can unscrew the DI canister, and it fills with water, then a few hours later I'll check it and the level in the canister will be down an inch or two. I never had that problem in my previous setup. Is this a problem? Any suggestions?
Second, I do have a pressure pump to increase ingoing pressure, but with 50 lbs, didn't figure I need it. Shoould I hook it up to get the pressure up to say 80 or 90 lbs? Would it help in as much as making water quicker and have less waste? TIA


New member
I got the 75gpd deluxe Ro/DI with 150 GPD Water Saving Upgrade Kit
and booster pump I am on well water. Got it from Bulk Reef Supply they advised me that the pump should be 65 lbs pressure but mine is at 60lbs & they said that would work fine.


Registered Reef Keeper
Thanks guys. Think I will lay off the pressure pump to see how this does here. Hooking it up for a 10 - 15 lb increase doesn't seem worth it.