Tony,
Welcome tot eh forum 
I have a 24 gallon tank and started out close to that. 40 pounds of live sand and 5 to 10 pounds live rock. I have another 10 + pounds of rock that is curring in the tank. I am not having any problems with that at all. I do have some external filtration in the tank but it is not extensive
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Loman
24 Gallon Saltwater Aquapod
1 Royal Gramma
1 Blue Devil
1 Bicolor Chromis Lyretail
1 Scooter Blenny
1 Chocolate Chip Star Fish
Crabs and Snails
20 Gallon Freshwater
Swords, Zebra Danio, Neon Tetras, Albino Cat Fish, Plecostomus, snails
10 Gallon QT Saltwater
10 Gallon QT Freshwater (Divided) | 
