I am working on setting up my 55 gallon soon to be SW
with a 29 gallon sump. I have egg crate cut to sit in the groves on top of the tank. I read that covering it with glass would be bad (gas exchange and ph something.) So I went with the egg crate to keep out foreign objects (from the 4 yr old). I have a Coralife 48" Lunar Light. It has a plastic cover protecting the lights. I am just wondering if there would be any problem if i had a piece of glass cut to go between the eggcrate and the light. Just the size of the light. So any salt will deposite on the glass and not the plastic, making it easier to scrape off!