Day 36 AK47 Autoflower what’s going on

[Slipknot]

I posted about a second plant on a different thread. This plant hasn’t had the stress/mistakes but has issues.

• Germinated in 3 gallon pot
• 100 watt dedicated LED fixture 24/7
• 4x2 tent
• 72-78 Fahrenheit
• 50-70 RH using a humidifier
• OF and 30% perlite mixture
• First 26 days well water ph 8.7, run off 6.4. Switched to distilled water for about a week, last few days back to well water adjusted to 6.4 with ph down. At day 26 the plant was nice and green but leaves were drooping, see first photo
• 1-2” of the OF/ Perlite mixture topped about 10 days ago.
  
  
  

 

[Ryno_nuggs]

How hard is your well water? It can have all sorts of minerals in it. Do you know the ppm?

 

[Slipknot]

How hard is your well water? It can have all sorts of minerals in it. Do you know the ppm?

Not yet, my meter arrives Friday

 

[Slipknot]

Hardness meter on the well water read 74, for comparison distilled water was 3.

 

[GenghisChron]

when are you noticing the droop? after water... just before lights out?

 

[Bill.de.Cat]

I'm inclined to blame the well water. I know I can't use mine straight....

 

[Slipknot]

when are you noticing the droop? after water... just before lights out?

I’m running lights 24/0

 

[GenghisChron]

I’m running lights 24/0

I was running 20/4 with a really bright light for my space and had it cranked up but kept the distance within spec. I noticed that my plants started drooping 2-3 hours before lights out and thats when I learned about DLI. Plants get tired if they get more light than they need and try to rest. I dialed back to 18/6 and lowered the wattage 20% and have been cruising since. If its drooping any other time during the day id be inclined to say its water related, maybe overwatering.

 

[Heavily Medicated]

Are you feeding nutes at all? What is the pH of the soil medium? With well water pH in at 8.7 and out at 6.4 would be looking at around 7.5 in the soil. Way too high, should be around 6.5-6.8. Then switching to RO pH 7.0 swings your pH abruptly down then back to well water causes another abrupt pH swing up, neither are good. pH needs to be steady and it the zone. Your plant is hungry and I suspect locked out.

 

[Slipknot]

Day 72