| Re: Just exactly what is a "cycled" tank
Water changes During the cycle (ammonia and nitrites period) sometimes will slow the process.. It is great that you are getting into a routine of maintenance on your tank. You are doing a great job,, This may be very confusing to new hobbiest... During the cycle it is best to just let the tank be and let the bacteria build up. I dont think 10% will slow it down all that much but it may be enough to make the nitrates linger for awhile. I wouldnt worry about it.. But that is probably what you are seeing. I would waite it out till the nitrates fall. Actually I wouldnt do anymore water changes until the nitrates fall. let the tank finish.. it shouldnt take to long.. Than you can try to add one small fish, Monitor the readings for a week or so after the addition. Good luck
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265 Gallon Reef built into basement wall. Lighting = 6x250 watts MH, 2x96 watt PC ,and 2x140 watt VHO for a total watt of 1,972 watts  . New addition on 4-14-07 of 100 gallon sump and 100 gallon refugium. I think I have lost my mind. Gotta love this hobby    Vicki
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