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1,585 Posts
I am doing 9 in a 125, but they are only 3 inches right now, and trust me when they grow into the tank I will be there to upgrade, plus filtration I got it covered with 5 filters plus undergravel filtration I am a tankaholic though like some one said dont overestimate urself! If I wanted it to be comfortable for lifeish 5 is tops good luck!