Mine gets refilled like twice a year cause I run it to two aquariums.I've never used smaller than 20 pound tanks and I've never had to fill them. Always ended up tearing the tank down first lol
Sent from my C6906 using MonsterAquariaNetwork App
50lb is the only thing bigger and I don't want to carry that filled lol
Sent from my iPhone using MonsterAquariaNetwork app