Anthem
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I would not worry too much about @KenKenaf. He is just a troll probably from Trollitup or perhaps @Trixie or @Zill. @KenKenaf posts read about the same as these two.
I would not worry too much about @KenKenaf. He is just a troll probably from Trollitup or perhaps @Trixie or @Zill. @KenKenaf posts read about the same as these two.Those are not foxtails. Different strains have different flowers, it can go to extremes, google "feno trigo Cannabis" or "Dr. Grinspoon". You are badmouthing good growers work in a feeble attempt to lift yourself over everyone else.
More tech.I was just thinking that a better question than "which is better" would be to ask "Which direction is the technology headed?"
Trixie is CreeperPark from ICMag, I recognize his setup in his profile picsI would not worry too much about @KenKenaf. He is just a troll probably from Trollitup or perhaps @Trixie or @Zill. @KenKenaf posts read about the same as these two.
If you are talking efficiency, no. You can replace a 1000w hps with a 300w led.
So in that case you can get 3 led lights for less of a power cost and have 3 times the light.
Don't pay attention to the advertises power consumption of led lights. Most of them use an equivalency rating. Something that is 1000w in advertising only actually draws 200w.
From what I've seen, leds can grow some great stuff. 1/4 the price on your power bill, less heat, more par for the $.
What's nI'd have too agreeot to agree the 1000 watts suck power. New efficient leds I have seem to work better
Appreciate the tip on heat generation makes me think to go for HPS during our very cold winter here at the coast. How do led grows generate heat in colder climates?
If you want LEDs that generate heat, buy California Lightworks brand. They make heat. I speak from experience.
well that's just observation from 35 hps grows or so vs 4 led grows (2 growers with the exact same setup)The LED has a steeper learning curve, it may get better, plus 200W LED put out a boatload more light than a 250W HPS (which is rather inefficient for the different HPS bulbs...). Then, the LEDs way more pronounced blue region may influence the plant to focus more on roots, and the HPS has more darkred which will expand leaves more.
The environmental needs and even the nutrient needs change with LED. Especially plant temps and that makes a lot of difference.well that's just observation from 35 hps grows or so vs 4 led grows (2 growers with the exact same setup)
that's what the plant look like day 18 with the SF2000 200W, on there 4th and 5th stages of leaves
View attachment 1338480
and that's what the plant usually look like day 18 with the HPS 250W, on their 6th 7th stages of leaves also noticeably bigger and taller overlaping much more to each others
View attachment 1338481
the lack of blue in hps spectrum might explain the difference, only others difference could be that with the HPS i had too hot temperature 34°-35°C sometime even more in summer.
but i find it a tad bit weird that a LED with supposedly a better spectrum than HPS result in slower growth rate in average the first few weeks
On the other hand i also find that in average buds are slighty more dense and compact with LED than with HPS. And that my trichromes mature much better without heat stress.
I also did a grow the first 5th week with HPS (veg 3 flo 2) and switched to led on the 6th week (3rd week flowering) with wich i didn't notice any difference in remaining stretch, only difference is i think my bud were more dense and compact in average than with the HPS.
spiderfamer sf2000 200wThe environmental needs and even the nutrient needs change with LED. Especially plant temps and that makes a lot of difference.
Also may i ask what LED you are using? The same distances ad eachother?
Ok so i would start by checking the difference in plant temps… spectral influence is another consideration as plant height, width, internode spacing etc can all be influenced by spectrum. You also cannot really lump LED in all together as there is quite a range of spectral options.spiderfamer sf2000 200w
first grow with it i switched from hps to led 3rd flowering weeks, @100% @25 cm from the plants tops, didn't notice any signifiant differences with last two week of stretch, and in the end i think my bud were slighty more dense and compact in average over the whole plant than with the HPS.
second grow i started with the led @100% @80 cm from plant (my hps 250w routine was @70cm) letting the plant grow without moving the lamp until distance between led and plants tops become smaller than 25cm
third grow i started with the led @85cm @50% first week and half then switched to 75% on going
fourth grow is from my padawan @80cm @60% for 1 week then @100cm @60% for 3 week then 80% @70cm for two first week of flo, then 100% @30cm from plant top
for the three last grow even with different dimming set up we didn't really notice some difference with growth rate between led grows, amount of leaves stage produced in said amount of days but there still the difference with the HPS, the plants seem to produce more leaves stage faster than with LED.
the fact is with hps i was vegging depending strain 2-4 weeks most of the time 3 before 12/12 flip
and now with the LED so far all plant needed 4 weeks before being ready for 12/12 flip
and my concern is gr/w/m²/"weeks spent veg+flo" one week more before harvest do impact this ratio.
also out of 3 grow and half so far with LED we already had a nice dispersion in plant growth in term of height depending strain reaching in the end of flowering 50cm to 1m20 depending strains and phenotypes wich is the same dispersion we had with the HPS, but veg seem slower with led than with hps
also i m wondering a lot on growdiaries.com and i always found that plant from other people with led were smaller than mine under hps at the same stage, not much sometime but still noticeably enough
You can use the same setting on the app to measure ppfd. There are conversion ratios to take into account. A good example is a blurple will be close to 10x the ppfd as a full spectrum LED. The app uses lux and a conversion factor to convert to ppfdoh and i also measured the ppfd with the photone app, with wich i find similar value with the par map provided by spiderfamer for various height set up of the lamp
so with the hps i had a ppfd around 150-200 on start up depending plants tops
and with led @80cm @100% around 200-250
with led @85cm @50% around 100-150
i didn't change my feeding routine, but my plants seem as happy with the led as they used to be with the hps.
Yeah… i would put to much into the ppfd rating of it without the paid version. A lix app and using a conversion like this is better if using LED and free version.yeah i still have the android beta version of photone app where all set up for various type of light (like a dozen or so) are available for free, i know for example the i phone version don't have various light type set up available for free.
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