| I have one these reactors. I can telly ou for sure if I was to do it all over again, I would go with a powerhead as a stirrer instead.
The magnetic stirrers have a lot of inherent problems with them. One of them being the kalk would cake up over the stirrer and would not mix. Another being that the stirrers are not designed to be in intensely humid conditions, so if you ahve them in a fish/equipment room or inside the stand, they will go kaka in a few months.
No question in my mind the better deisgn is the pump driven ones.
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Water is what keeps a ship floating, but it is also what sinks it.
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