knna,

I was trying to digest some of your earlier post.

As to my use of 4-4' T5 VHO, it is not the cheapest way out, but gave me a few pluses, like a square light footprint to match my 4'x4' trays and still have room for the Ti SmartLamp mounted in the middle. Something that 8 tubes would make difficult. As to shortened tube life, everything I've read indicates about 50% less usefull life. The 2700K T5 tubes are $9 each, I can afford to change them periodically.

Actually, from a cost standpoint, I would have done better with 2- 200watt 2700K CFLs ($71/ea) and a cheap bright star fixture ($35/ea)....but felt the light coverage better using 4' tubes.

I currently use regular 4' T5s over my ez-cloner set-up, actually two (2) 120s cloners side by side. I currently have a 5 bulb set up that I may increase to 7. I have one 4' in the middle, without reflector that is a super actinic bulb. Talk about blue output....it's all blue. The other 4 tubes are 6500K. I use the single actinic tube for the first 3-5 days, untill the stems sprout, then they get the rest of the light.

In my old set-up for the rotating garden, I clone with Rockwool plugs lit by 5mm LEDs mixed 3 to 1 blues to reds, about 30 watts worth.
My transplants from plugs to 4" delta blocks happens on a 2'x8' shelf that uses HGL DIY 14watt 5mm boards.....16 of them. For the last year and a half the little 5mm LEDs have done their thing...remarkably well. All of this prior to hi-power LEDs, but they actually worked.
oldmac Reviewed by oldmac on . Building LED lights from facts, no theories I was going to post this at the Perfect LED Grow Light thread, but as some of what im going to post was posted 2 years ago on the stickied thread about LEDs and people still continue developing lights from wrong ideas, i think a thread about this topic is largelly needed. The main problem is related to efficacy of spectrums. When the firsts LED experiments at Overgrow, we work on the hypothesis that blue and red light are more effective. It was an appealing hypothesis that promises large Rating: 5