My 180g has been probiotic since day 1 about 14mo. I mostly have sps with a few lps and a very few zoas and a couple of rics. Oh yeah and a couple "big 'ol" rbtas. The only thing that wont do anything for me is acans, but I couldn't grow them in my small non-probiotic tanks either.
I will say that I use vodka/vinigar with mb7 (1x per week) and probibio (1x per 3wks) vodka mix is at 3ml per day. I still run gfo and don't try to take the tank all the way to ulns (I think this the point where pro-biotics gets tricky). Normally I see nitrates at about .2ppm and I have never seen nitrates over 2ppm. I don't trust phosphate kits and don't have meter so I don't bother to test.
I don't think I would even bother with sps if I couldn't use probiotics, it's just sooo easy!! In 14mo I have never cleaned my sump or overflow and thats because there is just nothing to clean. My sump is unlit and spotless and I do not shut off the return when I feed. I have tons of pods and about 18 fish, four of them tangs so you know I am feeding quite a bit.
WARNING, probiotics is not the system for guys who think "more is better". And you must have a very effective skimmer. And like everything else in this money pit hobby take it slow, and learn what you can first.
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