I find it to work pretty good. It just doesn't last more than a month. It doesn't affect my corals negatively.I just use 5g more that the recommended dosage. I know the real issues are from my feeding regiment I can't find the sweet spot. I try a different regiment after every time I replace gfo
to see how long till the diatoms return. I just found myself feeding to little at one point and I know cause one of my fish was getting to skinny and one died. So I upped the feedings and tank went right back to diatoms. Its tough to find the sweet spot. I'm going to ditch my tang but I haven't found a suitable home for him yet. He is part of my problem he is to large for the system. I can tell he isn't comfortable.
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