well i’m gonna say what i see so dude can dim his lights and see if it works out for him and maybe after a week he can turn it up to 80% and then to 90% a week after that and then to 100% if everything goes well and during that process he can adjust his feeds and plants can get comfortable with the lights no need to stress them
Ok bro fair enough, but just once maybe try it as an experiment.... Next time you really have the urge to diagnose light stress, Increase your nutes. Just try it and you may be shocked.
I totally agree with you within the 500-1000 PPFD range is not going to be overkill. In flower that’s underpowered. 1200-1800 is where I find the sweet spot. 2000+ and one missed watering then you are fucked.
if they’re stressed to begin with throwing more nutrients on top of the stress will not solve the issue but compound it imo however i also don’t think 750umols is an overkill (if thats the actual median op sees) but most plants need acclimatisation as indoor stock thrown under the summer sun will burn first then gonna grow out of it (the uv is not the only culprit there) so if the op would first dim the lights a bit and it works he can then gradually turn it up and this way he doesnt create unneccessary stress for his plants and he can adjust feed etc and stop again if same symptoms appear. easy.
My apogee meter reads 1020 umols at the absolute highest part of my canopy, with most of it sitting between 600-800 and the corners dipping to 500.
Bro, fuck what dude is saying. Your light is fine maybe even a little too low... Is your fan on a switch or timer? I know you said your RH is 50% but have you calibrated your hygrometer? Doubt it, who does all that right? Those meters can be very inaccurate. i really think you have both a humidity problem and a nutrient deficiency... Not calcium because it's only in the older growth. Looks like low Nitrogen and low humidity. add a humidifier and keep your fan off a little more often put it on a thermostat if not already. Like i said i had the same problem in a 4x4 and humidifier solved it.
Of course just dont state opinion as fact. 20+ yrs at 33 ....but still wondering if you got ripped on seeds and saying light stress is a myth lol
fuck what i’m saying but your led fixture provides ir and uv so dim them and see if that helps and if it does you can turn it up weekly, give plants a chance to acclimatise and catch up with the intense light is my suggestion. your call.
Complete Myth. But understandably conflated because light and heat go hand in hand. Can you please use your bro science to explain to my simple mind what light does on a molecular level to cause physical damage to any object aside from heat? I'd be very interested in your answer.
They had 5 weeks of gradual increase to this level of light before I flipped to flower.
My fan is on max all the time. Where I live the ambient humidity outside is about 60-80% this time of year. The hygrometer outside the tent measures 57% inside the tent measures about 50%. No idea how to calibrate them
Welcome to the forum
Can you post said data please?
Do you have the sun in your tent? Are you suggesting that LEDs give off UV radiation comparable to that of the sun?
Already did bro. Its a YouTube video from the professor of plant physiology at the university of utah.
Can you please drop your light within a inch of your plant and post some pics in a few hours?
