No. That sand is made for reptiles and not for an aquarium. You can buy gravel in the aquatics section, or see if any aquarium shops sell sand for tanks. Bettas are the one fish that do not need a filter or air pump for their tank. No need to listen ...
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I'm guessing it's because many land reptiles remain with their eggs to guard them, while most water reptiles do not. Since the eggs are better-protected, there is no need for the huge numbers that water-living reptiles must lay to statistically assur...