hi, I need some help with water condition of my fish tank. I’ve recently got 6 new fish and added in my 10 gallon fish tank three days ago. I did set up my tank for 48 hours before adding fish but now the water gets cloudy with tiny air bubbles on the surface. I mistakenly gave too much food to them yesterday which I guess made water cloudier, I’m not sure if I need to do the partial water change or let it go. One of my fish (silver molly) keeps lingering near the surface to breath...
48 hours is not long enough for a tank to properly cycle. Several weeks to a couple months are needed for beneficial bacteria to populate the substrate and filter. These bacteria break down wastes (ammonia, nitrites, nitrates) that are harmful to fish and can promote bacterial blooms resulting in cloudy water. The overfeeding likely contributed to the bacterial bloom.
You can cycle with or without fish, however cycling with fish will increase the risk of loss. You'll need to monitor chemistry using a liquid test kit. The kits with strips are not as accurate. Perform partial water changes, no more than 25%, every few days or if ammonia levels begin to affect fish. Use only aged or conditioned water that is temperature matched to prevent stress or shock.
Feed them every other day. Normally, you would add one fish at a time but that isn't possible for you now. Monitor chemistry and perform water changes until ammonia and nitrites are 0.25ppm or less and nitrates are 40ppm or less. This can take, on average, 6 to 8 weeks. Be prepared for the possibility that you may lose some fish during this process. Some fish are hardier than others and can survive a cycling tank.
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