Light problem??? help! What am i doing wrong?

If its not too much water it should be DLI

yeah, i'd crank that back up to 100... pick height based on best total coverage, and use hours of use as your power dial. If more height is needed after adjusting horus of use, raise it up a bit more -- only evens out the coverage more and a little more loss to walls. max dli is mas dli, given some common sense context. it is relative to environment, but the general concept is good to understand. whether over 20 or 16 hours, if you provide the same total amount of photons (which is directly proportional to DLI), it'll be a very similar outcome - probably indistinguishable to the human eye. if you give too much relative to environemnt, they get all droopy-dog... might stunt growth in vege. some research showed there was no discernable difference between 12hrs and 13 hours for photoperiod plants when given same DLI. At some point there aren't enough hours in a day or the necessary light would be so intense it'd cause damage over so few hours, of course, but nobody is growing weed like either of those situations. Longer dark periods may increase stretch? but relative to 16-18-20 hours, it won't be much different if at all, so use what makes plants happy and confident you are giving at or near max amount of light per day based on plant behaviour while dialing it in. it'll be similar next time, but consider potential differences in environment... temp, rh, atmospheric co2.... you may need an extra inch of height from canopy, or 1 less inch etc, but it'll be a short trip from then on. more hours isn't necessarily better. DLI is a better concept to guide you... and still observe and react to plant, unless you tightly control environment and have familiarity you can bank on. this is how you get there faster. an uncontrolled environent make using DLI as a guide less precise, but still useful. the plant will quickly help you dial it in.

I'm not convinced about the suggestion of too much light... I run ALL my autos on 24/7 and not one of them has had any issue with it... I would tend to think this is a watering issue - either too much or too little (can't tell from your diary)... It could be lock out as well... if you're not overwatering her (best way to tell if she needs water is to lift her up - if she needs something, she'll be terribly light).. anyway, back to what I was saying... if you're NOT overwatering, I would suggest doing a flush and then gradually add nutes back in along with some microbes to help the roots take up what they need. She looks healthy other than the drooping - and everyone else looks pretty good too (which tends to REALLY argue against the light schedule... if it was too much, they'd all be droopy!) Good luck!

Hi ! I had the same droopy look with some autos on a 20/4 schedule. Every afternoon to evening, my girls where curling down more and more. I thought it was overwatering, but it was better in the morning. It finally seemed to be a few better when I gave her 18/6. They were just tired of too much light time 😴 Hope this could help and good luck !

She looks fine; just a little droopy. That usually over watering. At least it has been with me when mine look like that. Maybe cut back on watering. Let the top 2 inches of the soil dry out. See if she perks up.