does everybody see algea on there tanks? i had my tank running for 3 weeks before i put in an algea eater, and i never saw any algea. haven t ever seen any in my tank. is the algea eater just that good (he hasnt grow to big, maybe hes 5 inches long and not really growing). could it be i have to much oxygen in the tank for it to grow, i have a big filter on a 20 gallon tank.