Thanks again guys!
EZnet - All is good so far! The 175w MH on this tank is only 6" above the cover and I've had no sagging, stretching or anything else negative. The glues are holding up great too.
Marc - The netting I used is 'pond & pool netting' made by Gardeneer. It's a 3/8" mesh which we've found is important as the netting (and eggcrate) in the 1/2" size is too large and a wrasse or gramma with a running start can shoot right through it. I bought mine at Ace Hardware as I recall the 14' x 14' pkg was around 6.99
I still have a bunch left over, if you want a chunk...just PM me and tell me how much you need & I'll drop it in the mail.
BTW- Welcome aboard, nice to have you here!
Hey Scarf - the dremel worked great, thx for the idea...the handle now actually operates the door..lol