 Question about my first crabs, snails
My tank has been processing about 4 weeks now, all my levels but NO3's are zero, the NO3's are about 20 ppm. I haven't done any water changes, I've added sand about 3 weeks ago. Should I wait, or can I put in some cleaner critters? I can understand "WAIT", so, I am, but I really am chomping at the bit........
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Noob with a tank.
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