02-23-2008, 07:23 PM
| || | That rule is useless and will never work. It is something you should never intend to use because there are a lot of inconsistencies in that rule. It is only intended to prevent beginners from overstocking their tanks but even that rule is easily misunderstood. How about a 24-inch silver aro in a 24 gallons tank? How about the 12-inch oscar in a 12 gallons tank?
Originally Posted by Zule
A rule of thumb in the aquarium world is one inch of adult fish per gallon. The cherry barbs will reach 2", so that's already 12 inches of fish in a ten gallon tank. I'd either upgrade or hold off on any more fish.
Bear in mind, some fish even contribute much less waste in comparison to others whereas some need plenty of swimming space more than the others. A lot of fish dwell in different levels.