[DefStatic]

So I have an older 30 gal with a hood, with a piece of glass at the opening for the light. It is pretty foggy no matter how much I clean it.

Should I consider replacing it and if so how hard is it? The glass that is, would like to keep the hood still as it matches the tank.

 

[DefStatic]

It is the kind of hood Diana described. Plastic for the most part with and opening in the middle for the light.

I think I will try the CLR and if that doesn't work get the glass replaced.

The hood/glass is around 20 years old. I typically clean it each time I change the water. But it did sit for many hears not being used. And I had a period recently where I had to go 3 weeks to without a water change. I nnotied the mineral build up is quite strong. It looks fairly clear when I wash it but as soon as it dries it isn't. And I am wondering if that is reducing my overall lighting for my tank.