I have a 210 gallon tank with a 75 gallon tank underneath as the filter with 6-5gallon buckets of bio balls in it for filtration that I made. I keep the tank at 80-82 degrees. I use red flint #20 gravel. For those that don't know its fine gravel. For those that do is it good to use for breeding? I am intersted in breeding motoros. All the help and advice I can get like, is the tank good enough how many can I have, etc,etc.