Harris, I agree that HPS is more efficient than T5 for budding and produces better results, if the set ups are both right. But the degree of efficiency is more like 93 lumens per watt for 4' 54watt (the most efficient size, as far as I know). 400 watt HPS (the most efficient size AFAIK) will produce as much as 150 Lumens per watt. These two examples are very efficient for lighting and growing. Now, you really have to watch all types of lighting efficiency in regards to Lumens per wat ($$$= efficiency). Some sizes and specific lamp and ballast or transformer types will make big differences.

Ok, then we have the heat factor. Right now I've just begun to use a little HID lights during veg for the "benefit" of the heat. I think if I was commercial I would deffinetly try HPS for flour and flourescent for growing. As I'm just tryin to produce a little bit of weed for cheap, I'm using what's available mostly and getting some good advice on indoor growin here on this website, Thank you all!

Shovelhandle
Shovelhandle Reviewed by Shovelhandle on . Who's working with T5s They keep calling me and I have seen other logs elsewhere where T5s are being used from seed to harvesting. Is there anyone here using them? What were your results? What were the positives, negatives? Thanks! Rating: 5