
This has to be the most effective hard water cleaner I have ever used in my aquarium! (CLR is NOT suitable for aquarium! π) Just spray thick mist, wait a minute for it to work its magic. then wipe it! It is really that easy. Even heavily encrusted deposits from hard water are removed. I have been using this cleaner for many many years and the photo shows how well it works for a 22 year old tank. (And tap water is so hard that when I wash my black car in the sun it dries white!)

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