Plant is almost 14 weeks old. Thing is i’ve never been able to crank up the light strength even when the plant was vegging, come flowering it shows the same stress symptoms when i try to up the dimmer.
The above is only a reference for temperature purposes. Highs of 27 D Celsius with lows of 21 D Celsius through out the day when it was vegging. Increasing the light intensity caused the above symptoms.
Come flowering, i am trying to up the light intensity and again the symptoms re-appeared, considering it was/ is heat stress, why did it happen when the temperature was most favorable while it was vegging.
Now the i have highs of 33 D Celsius and lows of 30 D Celsius (Hot as hell), but the plant didn’t show any signs of heat stress till i upped the strength.
Changes i’ve made to reduce transpiration rates and prevent the drying out of leaves ( i think my leaves are drying out), moved fan so it doesnt directly blow over the plant, increased feed cycles to 12 from 6 (15 min on and 45mins off, for each hour the light is on).
Yes there are signs of nutrient burn, but that was because i was pushing the plant in vegging phase.
The thing i can’t for the life of me is figure out:
When i research Canoeing of leaves: ( They all point towards increased transpiration and ofc my symptoms have come up only after increasing light strength so that’s something to note )
- The temperature is too much, light opens up the stomata causing more transpiration and hence drying canoeing of leaves.
- Direct fans blowing on the plant, causing the leaves to dry out faster.
Remedy im trying:
Increased distance between the canopy and light by a foot. (26 inches total)
Placed fan so it doesn’t hit leaves directly.
Increased feed cycles (15 min on, 45min off, im using clay pebbles only the roots are okay) to 12 cycles a day when the light is on.
What is bothering me the most is if it is heat/ light stress, the temps were favorable 2 months ago, still upping the intensity caused canoeing.
When i have to move my light up the DLI figures aren’t favorable, ( right now the most light hitting the top most part of my canopy is 17 ).
Is my harvest doomed to fail?