Morpheus77 Posted June 14, 2022 Share Posted June 14, 2022 So the 2.5 gallon suddenly spiked in about 18 hrs. 2.0 on ammonia, 2.0 on nitrites, and 80 on nitrates, phosphates .03. 18 hrs prior, .25 ammonia, 20 nitrates, 0 nitrites. My CUC is accounted for. The only changes I made were two in particular. First off, been slowly switching over from Imagitarium SW from Petco, to Oceans Own nutri-water, a little experiment I'm doing, and the second thing was I removed the foam filter from HOB filter and replaced it with matrix. At same time time, I switched out the floss, so now running floss, purigen, and matrix in the little HOB. I went to filtration about two weeks ago to help keep nitrates in check. I did a 75% WC in about a 12 hr period. Basically 50% when I got home yesterday, another 6 cup WC two hours later, and another 4 cup WC this morning. Any ideas what may be up with my tank? The corals stayed closed up obviously, and what's crazy, is my palythoa looked the best I've seen him in about 6 months, right before it crashed. Just when I was thinking we were moving forward, and then a crash. Can changing filtration cause a sudden spike? When I tested again this morning, nothing changed for the worse, stayed about half of what it was after the 50% WC. Could the tank have cycled again? It's a year and a half old, just curious on what's yall thoughts are. Thanks. 1 Quote Link to comment
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