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i have a 55G reef been setup for about 6-7 months, never had diatoms before. i had a case of cyano because of poor flow i think so i did something i usually dont do, which was use ultralife red slime remover it did get rid of the cyano but it made my water yellow and made my skimmer go crazy for a week so i did some large water changes to get it out of my system now i have diatoms all over my sand and covering my glass i dont understand i used my ro/di like i always i do is this normal?
