I.have about a 90ish gallon corner bow. I use 2. I love them. Just wish they'd fix the programming on the random mode. They rate doesnt change very fast and the anti sinc doesnt work in random.2 questions. is one enough for a 72 bow to cover it all with no dead spots, 2 i will have some smaller fish, clowns, chromis, etc in this build... should i look elsewhere? tanks 4 foot