need help on the thickness of glass

[Skimmerking]

ok i'm looking at the prices on tanks and here is the problem. I have a friend who makes tanks and he told me tha 1/2 is over kill on a tank. i can go with out a center brace. and its over 300 bones for a 36x20x20

now i can get 6 mm which is 1/4 and have that for a tnak for 150 with taxes my friend says it will work fine. and to drill a holes for a 1" bulk its 15 dollars so 165 for everything.

Or i can go 10mm 3/8" for around 250 what would you guys do with that.


mike

oh ya i'm going to be running a 1x250 20K MH and 2x36" actinic on a 40 w glo mat (40w) ballast. with a 2" sand bed and a prism pro skimmer and a mak 4 return in the base ment below the tank the head will be around 8-9'
any ideas on the setup


mike