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ammonia dropping

  1. Skimmers & other filtration
    Hello. Petco sells Zeolite crystals and the label says that this type is good not only for fresh water, but also for salt water. This article explains why not every type of zeolite is good for salt water and why it can actually be bad for a reef tank. So I wonder if anyone has tried zeolite and...
  2. General Reef Discussion
    Hey guys. I'm 2 weeks into my 55g tank cycle now. My nitrates, nitrites, pH and salinity are all in check. Ammonia has been sitting at .25ppm. I have about 100 pounds of live rock and 40 pounds of live sand. I figured my ammonia levels would have started dropping by now. We have a nanocube...
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