water stains on a glass tank

[Mattyou]

Start with the vinegar like Jamieb said.

We have a couple of products here (U.S.) CLR and Lime Away. Wear rubber gloves and eye protection with any of these and good ventilation especially with the muriatic acid (start out with a weak solution and increase it till it works).

Dr Joe

.

CLR and Lime Away are both great for this. I purchased a 55 Gal that was used as a sump for years from a LFS going out of buisness and it had an incredible buildup on it. It took a little elbow grease and a full bottle of each CLR and Gel Lime Away but it is as clear as new now. Be carefull with the razor though, it will scratch that glass if your to aggressive with it.

 

[dragonslayer671]

thanks for the advise i'll try to look for those chemicals when i'm back home