If you want to do anemone and a pair of percs go with at least a 10 gallon. 5.5 will be very unstable and you will have to keep a really close eye on evaporation and feeding/nitrates with an anemone in that tank.
If you want to do anemone and a pair of percs go with at least a 10 gallon. 5.5 will be very unstable and you will have to keep a really close eye on evaporation and feeding/nitrates with an anemone in that tank.
30 Gallon reef, 220 gallon South American Cichlid tank.