Hotblondz13
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- Joined
- Jan 19, 2026
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- 13
Hello! I’ve been having a bit of an issue getting my light dialed in. For reference , I’m running a 2.5x2.5 tent , 2 Mars Hydro TS-1000’s, 2 Mars Hydro Red 30 supplemental light bars , 1 oscillating fan , and a 4 inch exhaust fan. I have 3 plants on day 4 of flowering with include Bruce Banner , Super Boof , and Grandaddy Purple. What I can’t figure out is why I keep experiencing light stress at anything over 45% brightness. My runoff PH is 6.5 and PPM is always 100 or so over or under the input. I dimmed the light back down to 35% yesterday and the plants seem to be much happier. The picture attached was taken this morning at 35%. What I can’t figure out is the canopy PPFD at 35% is between 400-450, but isn’t that too low for the flowering stage? Any time I bring it up to 600 PPFD I start experiencing taco leaves and yellowing new growth. According to the “charts” I should be pushing past 600 PPFD at this stage correct? Unfortunately, I can’t go anywhere near that without the plants stressing out. They’re also getting fed once a week using the General Hydroponics 10 part feed chart. At this stage of flowering I’m using they’re “light feed”. Any help would appreciated! Thanks!