I "Soaked" my tank in vinegar (bought 1 gallon jugs of vinegar from Walmart, set tank on side with build up, poured enough to cover side until it almost ran out the tank, waited for 24-48 hours, came back and took a soft bristtle scrub brush and it came off real easy and then turned the tank and did the next side.)

But no....I've heard of people using it without any ill side effects, never have myself though was too worried about my acrylic but you have glass. I would personally put a little drop on the corner first and let it sit for a short time and then clean that up and make sure that it isn't going to turn your glass foggy before I did the whole tank.

The vinegar DID get it all off and there was some coriline that was pitted in the acrylic it was soo deep and it got that out. now I'm sanding and resurfacing the acrylic to make it look like glass again.


Just be very careful with that stuff!!!!!!