Ecocolumn Lab

Next add the gravel. You need 10 pounds for every 10 gallons of water in the tank. You don’t need to rinse or clean gravel from a pet store; it is ready to go. Once the gravel is in place, add the water. Use clear water from your tap. It is a good idea to add dechlorinator to neutralize any chemicals in the water before adding fish ... ................
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