Should I put this sand with my 5 gallon with beta and tetras or my soon to come 5 gallon with one dwarf puffer? Or should I put it with both, just buy more? Also, is there anything I need to know before changing or putting this as my substrate such as better filter? ( I have the basic HOB
walmart one) and do I worry about cloudy water, and can fish still eat form the bottem of the tank with sand there instead of gravel? (Bottem feeders??) and would the sand hurt my glass tank or arcryllic tank? (dont know which one I have). ALso, I may upgrade or get another tank to put my koi in, would they do good with sand? (If not, I may just get rid of my koi if I cannot upgrade my tank).