So i went to home depot today and picked up all the material to build one, its already done and on the tank and it looks great. only question i have is they didn't have the screening with the bigger holes. so i had to buy the one with the small holes is this going to really effect my light getting into the tank? i don't see any difference in the tank. its a 6 bulb tek elite system on a 75 gallon so plenty of light. just looking for opinions thanks guys.