So i have a 55 gallon which i currently have a glass top on. i would like to make some sort of net that will let more light through, as i tried to just leave the tops open and it wasn't an hour and my clown fish jumped out!! luckily i was standing right by the tank when it happened so i was able to just pick him up and put him back in. havent had any luck online finding a place to buy netting. What size mesh would anyone reccommend and where might i find it. also, i guess i would need to make the frame out of aluminum or stainless to keep it from rusting, huh? Thanks in advance for your help!!!