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water agitation

  1. How much water flow needed

    Freshwater and Tropical Fish
    Water flow and surface agitation Can anyone give some information, on how much water flow is needed and surface agitation for a small tropical fish community tank, the tank itself is tall tank, about 150litres, I have powerheads with spray bars submerged, pointing at side of tank and one...
  2. Please help! Nitrates high

    Tropical Fish Diseases
    So I did a 50% water change less than 12 hours ago. I've noticed this evening my fish are breathing particularly heavy. Also, the BW tetras were hanging out at the top gasping for air. I've even noticed my clown pleco coming up for air a couple times! Just now: PH 7.6 ammonia 0-0.25 (which...
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