First time I cleaned the copper, the metal spiral piece and basket were fine going back on with the bottom device, however the second time, the bottom screw doesn’t want to screw in and tighten once cleaned. I tried flipping the end and it tightened but the other side didn’t want to tighten to the solar device. After careful examination, the one side looks like a piece of copper chipped off and making the three components not work (metal spiral, blue basket and blue screw) The copper did work when in the pool and didn’t make my pool green which was a plus. The water dip was also easy to read. If the copper didn’t have the chip at the top, I would’ve rated this product a 5 but because of the second cleaning and being unable to screw the bottom blue price in, I have to give it a 2 since it works but need to improve.

worked great but had bought 2 so returned 1