Hey guys Im moving my little dumpy into a 29 gallon soon. The 29 gallon was used for my fish but I dont have them anymore. Would it be ok to put him in there if I clean the tank very well but what should I use to clean the tank? how many can I put in there cause I wanted to get three more would it be ok? Oh and im only moving him into the big tank cause the tank hes in is too small. Thanks