Hi, i have that vac too i only use it for picking up uneaten food and i have another for my changes. 50 % change is perfect i take that much out of both of my tanks.
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70 gallon elephant nose tank, Gonzo the elephant nose and friends!
30gallon borara merah and brigittae green, red longfin bristlenose, shrimp, ninja, taiwan,bamboo, and snails.   [SIGPIC][/SIGPIC]
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