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Considering the weight of water alone the 65 gallon tank would weigh a minimum of 541 lbs. (65gal)(8.33 lbs/gal)=541.45 lbs. But this figure doesn't include the tank weight, rock weight, etc. I'd figure about 110 lbs in tank and extras putting the total weight of a filled tank somewhere around 650 lbs

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17y ago

What else can I help you with?