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  1. rk4n3

    Correct Kind Of Ammonia For Fish-Less Cycle

    Hi all,   I'm going to be starting a fish-less cycle on my new 29-gal tank, and I went to look for ammonia with uncertain results.   I found one (at Walgreens) that had ingredients as ammonium hydroxide (which I understand is "ammonia") and "surfactant".  I think surfactant is some kind of...