Please help ASAP. I read a lot and have never seen a symptom of a problem like this.
Here is the info..
Day 25 flower, pistils have been browning and shriveling for 4-5 days now. I did some tying down of branches and thought it might be bruising at first but it has continued to slowly progress.
Strain is a mostly indica WW cross with an unknown.
Co2 at 1400 ppm
Temps 85-90 day at 1 in. above canopy / 65-70 night
Humidity - 40-50 lights on / 60-70 lights off
Lights 1000 w HPS 15 inches from plants
Resi - 80 gallon with 2 pumps for delivering water to plants, 1 heater set at 75f and 2 air pumps with bubbler stones.
PH - 5.8-6.3 usually around 6.0
Substrate - Top feed, Coco Coir&perlite 50/50, 2gal mesh bottoms.
Nutes - Canna Flora 500ppm
FF Big Bloom 300ppm
PBP Bloom 300ppm
Superthrive - As recommended 4 maintainence
Cal-Mag 350 ppm
B1 Thrive Alive - As recommended 4 maintainence
Foliar Fed - 4 or 5 days ago with Superthrive,neem,wetting agent,pyrethrins, and Earthjuice catalyst solution.
Changed resi out 3 days ago after 3 weeks of adding back.
I have been looking at some other grows with optimum conditions and they seem to be farther along than me at 25 days. Please tell me if you think I am lagging on flower production.
I had a problem with some defiencies and burned some leaves and had some chlorosis a couple weeks ago I though I sorted it out with Cal Mag supplementation because my tap is only at 33 ppm but the burnt leaves and chlorosis are getting worse again. It is happening on older but not the oldest fan leaves. New green growth appears to be slowing but healthy.
One thought I am kicking around is that this is from an imbalance prior to changing my resi 3 days ago and is just playing out now.
Here are the pics....