Title: DONT SWITCH IT OFF
Product review: I purchased this powerhead with high expectations. I positioned it in my tank, turned it on, and it worked. I wanted to adjust it though, so I unplugged it, moved it to another spot, plugged it back in, and....nothing. The propeller would not spin no matter how many adjustments I made. This is not a fluke with this one powerhead either. I had the exact same problem with theKORALIA 2 UL 600 gph 4.5W. Koralia powerheads are not suitable for on and off use. Don't buy them.
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