IF you can come up with a wider grow-space (48") ----- I grew for 40 years using flourescent tubes - I did NOT use the T5s, as I don't feel their additional lumens are worth the big price-difference - not when fixtures and 'normal' tubes are so cheap, (just add another fixture to make up the difference) - I used plain old GE 'Cool White' fluorescent tubes(T12s) from WalMart for vegging (blue spectrum), and the GE 'Kitchen and Bath' tubes for the red-spectrum flowering phase - these lamps give you the proper light spectrums, without the costs, and not that much less lumens than the expensive T5s - :jointsmile: