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  1. What can I add to my tank?

    I have a 15 gallon tank who's primary focus it to grow Wisteria to be later transfer to my 60 gallon tank. I have a few shrimp and mollies in there. I had to introduce otocinclus because the mollies poop is an eye sore on my substrate. I am using ultra fine white beach sand. What can I add to...