Quarry, How long do you run the sponge and how much do you use? I bought some of the Kent PO4
sponge and ran it for a couple of days. I assume you have to discard it or recharge it? I just put about 4-5 tablespoons in a media bag and dropped in my sump under the drain line.
Maybe I will drop in a new DI
filter and see what happens.
*180 gal Display, 100 gal basement sump, 33 gal refugium, 3x250 MH, 2x160 VHO actinics, zoos, some softies, LPS & lots of acros and other SPS.
*100 gal prop tank plumbed into main system w/ 2x96 PC lights and 1x150 MH,