Nava Chemicals 652137022 32-Ounce Tile and Vinyl Cleaner, 1-Quart Bottle

Been driving myself insane trying to get the grime and grease removed from around the water level in the pool (above the water line). The more I tried, the more bugs and gunk stuck to it. Yesterday I received this (in record time I might add) and took it with a "sink sponge" to the pool. I put some on the rough side of the sponge and started to wipe. Absolutely a breeze and it cleaned it off completely. Easy to use, didn't bubble in the pool, didn't affect the chemical levels and I will never be without it again! Only one downside - I'm sorry I didn't find it earlier and I wasted all that time.

I used this product on a vinyl pool liner which had the ring around the water line but it did not remove any of it. I used the product straight from the bottle and used a scrubber...didn't remove anything. I'm also a little concerned at the warning on the bottle, "not to have in come in contact with your skin", hmmmm? kind of hard not to have it come in contact with your skin. I would not recommend this product...I'm going to my pool store and get the SeaKlear Thick tile and vinyl product, much more effective, you still have to scrub but that works.

Second year I've used this to clean the weird nasty brown ring formed in my 18' above ground vinyl pool. We think it is a combo of hard water and human oils that builds up over the summer season. Its tough to clean. With this product and a little elbow grease it comes off wonderfully. Nothing else worked - and especially safely on vinyl. I've also used it to clean the tiles in the bathroom - and it is *really* good at that.... gets off the soap scum etc very easily.