Need help with glass fogged up?(pics included)...


New member
This is my first salt water build it will be a FOWLR setup. After me and my friend re-siliconed the tank i noticed that the glass is a bit fogged up in the corner. Ive tried cleaning the glass but it keeps coming back. Will this go away once i have the tank completely setup or is there a way that i can get rid of this?

here are some pics...





New member
you are going to need a new razor blade and some elbow greese to get rid of that stuff.

ive had it happen before, it sucks but will come off.


New member
I tried vinegar and several razors and nothing. a friend of mine recommended muriatic acid. should I try it?


Premium Member
Make sure that there is water in the tank before you use a razor blade on it. This can be fresh water, but when the glass is dry you run the risk of scratching the surface.


Registered Member
Muratic acid (diluted with water) may help if its calcium carbonate build up - but so would vinegar. If its residual silicon I doubt that vinegar or muratic acid is going to do much/if anything. Good old fashion razor blade would be might on my list.