This is a 100% honest review after 3 months of use. This product is rubbish, it leaves micro scratches on everything. Whatever people say, after a few months of use, you'll start noticing the "haze" these micro-scratches create. At first I thought it was something different, but then I noticed more haze in tiny scratches after use. I took it and put it in the water along with a piece of acrylic I got from an old lid. I used it on this piece of acrylic in 100% pure water for over an hour. The smoke was there. PLEASE do not buy. A $5 scouring pad cleans 10X better and faster, in under 1 minute with wet hands per day, easy on your tank. Mine is scratched right now and will be until I dry and polish it. It's not bad, so I'll tolerate it, but it's noticeable when you look at it from an angle in the light. I tested it again after 3 months of use in my aquarium. It sometimes leaves macro-visible scratches if a grain of sand gets under it, but even with no SAND in clear water it leaves micro-scratches as I've tested. It's worth wetting my hands 1 minute a day to keep my acrylic tank from scratching and clouding overtime. Throw away this POS.
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