This is Rhinox cleaner by Rhino. You use this cleaner to remove algae, debris, waste and calcium deposits from air stones, air equipment and aquarium glass. To remove from air equipment you remove from tank and soak overnight, in the morning rinse all equipment with water. I used this product to help with the glass lid for my tank it had algae and calcium build up on it. It worked great on the glass, there were a few calcium spots that didn't come off but I did not soak the lid overnight. So it psrobably would have removed all if I soaked but I didn't want my fish to jump out of my tank. I am happy with the way the glass turned out. This product cost: $7.95 and can be ordered here: https://www.amazon.com/…/B01…/ref=oh_aui_detailpage_o03_s00…
* I received this product for a discount in exchange for my honest review.
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