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sorry my morphine was kicking in https://www.amazon.com/Barrina-Equivalent-Spectrum-Reflector-Greenhouse/dp/B07ZJKL5F7/ref=psdc_14252961_t2_B07ZFLMTS9

https://www.amazon.com/Barrina-Equivalent-Spectrum-Reflector-Greenhouse/dp/B07ZJKL5F7/ref=psdc_14252961_t2_B07ZFLMTS9

would these work well for a full cycle (seed to harvest) grow light in a 2ft by4ft tent. Ihave 365,385, 425, and 470nm diodes I could use to make a supplemental light

have you considered these https://www.amazon.com/Barrina-Equivalent-Spectrum-V-Shape-Reflector/dp/B07ZFLMTS9?ref_=ast_sto_dp

intensity has nothing to do with it. beam angle determines penetration. a narrow beam angle will penetrate deeper but the footprint of the light will grow more slowly

I have not used calu weed in 40 years but 2 years ago ILGM started using cali seed banks to get around customs and the quality was so poor that I switched to NIRVANA to get high quality seeds.for a time anyone in cali could become a commercial grower for a low fee. but in nevada and other...

looks like you will be using those as supplmental lighting in an HPS flowering room so you may whwnt to drop a couple of these in there https://www.amazon.com/dp/B07GBRKXPS/?coliid=IQH359VASXSVU&colid=AW7UKM9ED6GM&psc=1&ref_=lv_ov_lig_dp_it to improve potency and taste

these are another good option to mix with 6500k https://www.amazon.com/dp/B00FQ87DP6/?coliid=I2GA9WD8U48GW9&colid=AW7UKM9ED6GM&psc=1&ref_=lv_ov_lig_dp_it. been using them for 5 years and see a slight improvement in yeild with no decline in taste or potency.4000k bridgelux strips produced the...

what ther are calling uv is near UV (405nm). there is no evedence that this has the same effect of UVA you still need a MH or T5 bulb to get useful UV

yes you want about 50 watts/sq ft. to flower well with HPS

seems like you would need 2-1000 watt HPS lights to flower in that much space...

i learned a lot about growing with t5s from him.i respect his knowledge.

a well known grower here is using 5000k led flood lights with UV bulbs and a 450nm led strip light very little red. did you find any evidence that UV or violet promoted flowering?

I would go with CMH to add UV

how efficient are those chinese flood lights?

those test would suggest that 415nm light are as effective as reptile bulbs. since those diodesdrive phospher only a small amount of their energy is emitted as 415nm. what percentage of you UV boards is 415 nm

have you considered these https://www.amazon.com/dp/B07ZJLWXFR/ref=emc_b_5_t they are availale in white (6500k) yellow (3500k) and pink 450nm/660nm) and they have good reviews. I am considering using the 4ft pink bulbs as pontoons on my T5s to replace the 660nm bloom bulbs I'm currently...

they do have a great spd and like all leds the efficiency should improve and the price should drop. this may become the next generation of grow lights. with a 420nm "pump" they should drive chlorophyll A to PSII stimulation acting more like full sunlight.this technology is not ready for prime...

most commercial growers use them but whatever you use you will have heat issues