03-24-2008, 01:07 PM
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Water changes are necessary and tank size determines when and how much. Some breeders of exotic fish change 25%-50% daily. The common rule of thumb is 25% weekly. It muust be said, also, that smaller tanks require more maintainance and stricter adherence to the rule.
Gravel sweeps should be done monthly. More often if you are overfeeding or notice a mulm buildup on the surface of the gravel.
As far as helping your fish to grow, a variety in the diet that would include live food, freeze dried, or frozen, as well as a high quality, premium flake food as a staple, is a definite plus.