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personaly i wouldnt buy used led lights unless i knew the seller and the history of the lights ect. if budget is a priority keep an eye on the best deals thread like @HydoDan suggested. if this is your first go with led you dont need 650watt of light, you could start with a cheap 200watt...

i have read before the effect of spectrum on photosynthesis deminishes the higher the intensity of light but not read anything about intensitys effect on morphology. are you saying theses studys show no effect on morphology via spectrum once you hit light saturation?.

i was hoping you would tell me lol... is the higher dry mass from the hps coming from the better penertration due to the extra green light?, shows spectrum has a definite roll to play and it shouldnt all be about efficiency. i found the nuitrient uptake of the different spectrums the most...

@Kassiopeija you have probably already seen this, but i thought id post it up anyway. https://escholarship.mcgill.ca/downloads/7p88cn54p

:oops:... seriously though what you got cookin?... im starting to think about building something new to replace my older light, i want to simplify it down to 3 channels (warm white diodes channel, blue boost channel-pc blue/monos and far red channel) and tweak the spectrum a bit. really...

spill the beans then...

funny you should mention deepchunk, ive had these a few years now never popped em.

no problem man thanks for the info... im not advocating extreme ec values nor do i intend to try using that a high a value myself, just reporting what i have seen. i am about to try drippers again for the third time, after messing with hydro for years in various forms i settled on hand...

to those that are interested here is a pic of a crop steering irrigation cycle. 2 days worth of irrigation are shown, yellow line is pore water ec with values on the left, blue line is water content with values on the right. i think this was around 3.0ec input 1 week into flower. note the...

kk, just thought he was like a few other people on here who have posted saying the op's ec is to high without maybe understanding the theory behind what the op is doing. i was the same until i read up on it, i couldnt get my head round how you could run such high ec's but it turns out you can...

you are hand watering the op is using drippers combined with a moisture sensor and pore water ec sensor using a technique called crop steering. what ec feed and frequency you use for your watering cycle is not relavent compared to the op's. if you are watering every other day with an ec of say...

this thread started with unfounded accusations...so this seems a fitting end...

i honestly think this ship has sailed, i dont think the chinese light manufactures are hanging off hlgs every move anymore. they have seen what they needed to years ago. until someone comes up with something new like quantum boards were to cobs or strip lights were to boards, this industry is...

yer i hear you regarding pot sizes, i dont think you need to go much bigger just an extra liter would be 20% more volume that should be a good bit of extra buffer. what type of pot are you using?

i think your pot size isnt helping, 5 liter pots for 6 plants in a 5x5 sounds small. i am just about to start messing with water content /pore water ec meters(acclima), so i have been reading up on crop steering and dryback percentages ect. it amazes me how high an ec you can run when dialled...

THANKYOU... just to add i have no skin in this game and i couldnt care less what light someone buys, i dont own or ever will own a light by hlg or gml. im not for or against either side im just commenting on parts of the story i find interesting/strange... but with 99% led growlight spectrums...

exactly... you reverse engineer ufo's not quantum boards.:eyesmoke:

what down to the exact 0.1 of mm of track thickness on the pcb's?, yer hes got it bad for hlg alright...

but why does he need a one to one copy hes not trying to pass them off as originals.