T5 Lighting question

[EW_Fish]

I bought 4 tek reflectors for my 20 long but the only problem is they sit out from the tank. How much would it affect me to run 2 t5 lamps under one tek reflector? I was thinking I could do this to save lots of space Im running leds now so I would run 12 rapid leds down the middle of the t5 lamps like this (T5-T5) (LEDS) (T5-T5)

 

[revsgirl]

:bump:

 

[Steelerfan747]

Not really sure but I think it depends mostly on what bulbs you are using as I know UVL has built in reflectors but most others do not