Double Boa Viv

[mosher_88]

Hi, I am currently in the process of building two boa vivs, It is a double stack with one on top of the other in one unit. Each viv measures 6ft x 2.5ft x 2.5ft.
I am thinking of using a tube heater for each viv, as used in greenhouses, but am unsure what size heater and where to mount it. Can anyone who has used these before give me some advice please.

Also what thickness glass should i use, 4mm or 6mm, and should it be toughened?

Many Thanks

[markhill]

not sure on the heater, but it should be toughened, adult boas strike hard and fast and can break glass, i think toughened only comes in 6mm and not 4mm.