I can help.
Firstly the breeder is totally out of date. A single lamp can NEVER provide the light and energy from light that is required over a usable area. It's a madness to suggest such.
You have got a little confused with the controllers. You are looking at High output T5 lamps which you need and standard output T8 controllers. The 2 can never work.
T5 requires a high output, high frequency electronic signal to activate the high output phosphors.
So in an enclosure of that size you need the 39w system as you rightly point out.
So ACRE1U5 is the 24-39w single controller
FD3P39T5 is the lamp
ALRS39 is the all important reflector.
You can then use a D3 backing lamp as a boosting zone just for a few hours a day.
You will need a stat controlled heat source, but you would need one whatever you used.
T5 produces 2-3 times more light and as such energy from light than any T8 including our own. They waste less current and are therefore cheaper to run also. They are flicker free and will last a whole year guaranteed.
There is much much more on this in the "practical reptile keeping magazine" section from the front page here Arcadia Reptile : Arcadia Products Plc
Let me know if you get stuck
John Courteney-Smith MRSB.
Arcadia Reptile; Head of Science and Innovation
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