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02-01-2008, 06:11 PM #11Senior Member
LED grow lights... input please.
i dont know if id risk the entire crop the 1st time around. its not my grow BUT if it was id partition the last 2' of it hang jjust 1 PROCYON and then hang like 2 4ooW HPS lamps over the rest. it seems like - for now theres a lot of manipulation that you need to keep up on - from the report.
....'"Red needs to be strong. Bring the blue down until all growth stops, but maintains good leaf and stem strength....This should force blossom stage and if stressed properly, good blossom performance. Once number of blossoms are satisfactory, increase blue back to that point where plant leaves and stems get just healthy looking and strong.'".
the reasearcher closes his statement by giving this opinion.
.... '"Opinion: Blossom stage still needs work, HPS is still better at the 1/3 LED/HID, but I believe from what I've seen, that a lot of bad blossom performance is being caused by stretched veg growth in every LED grow I've seen. You must pay attention to the veg stage to have a good blossom stage.'".
this we can all understand with the new lights i would think that here what we need to do is make sure they are hung at the right height. refering back to the report at.... Untitled Page the reasearcher did construct a grid to evaluate lumen dispersion at not only reccomended height but several others as well. from looking at it one can see that the optimum is at 24". now i dont know about everyonelse but what we do is keep our babies short (2.5 - 3' tall) asa result if hung at 18" above the canopy most of the nectar part of the plant will be at maximum exposure thru out veg producing maximum results.
as far as claims of better faster bigger i know that will come. what the real concern here should be is power and cooling - i.e. if i can veg w 400w instead of 1200 and flower w 800w instead of 2400ive saved 2/3 on enegry in lighting and at least 75% in cooling and of those two cooling is what should be most considered and of the most importance. ya cant grow killer nugs unless you provide optimum environmental conditions for cannabis thats like 80 - 85 degrees lights on - and the most important 15 degree (or more) drop at lights out. do you have any idea how hard that is to do in july in calif? the NO HEAT LED is what will change the entire face of indoor horticulture.
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