I have a ~30 gallon biocube. It fit in the return chamber but this is my first AIO and first protein skimmer and I didn’t realize than when I turn off the return pump, the change in water height will prevent it from working. It’s too big to fit in my overflow chamber, where water height is more or less constant.what kind of AIO system/tank you got? i would like to get it but not sure if it will fit my tank.
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