I need some help identifying leaf issues on 2 of my plants.
Basic information:
Grow Medium - Happy Frog
Temp 82-86F day, 77 night
Humidity 49-53 day, 57% night
Strain: Northern Lights Auto
Age of Plants ~5 weeks
PH of grow medium as of 3 days ago, 6.2 via slurry test
1 week ago started adding 2-3-2 Medina liquid fish blend @ 1/4 dose, 1 day ago at full
1 day ago big bloom @ 1/4 of general feeding recommendation
PH of water w/ fert 5.9
PH of water w/o fert 9.4 first 4 weeks, last of last week its filtered water @7.2
Water every 2 days at 800ml per pot, pot size ~1.5-2 gallons. The pot feels light when I water.
Other commentary:
The grow medium was a 5.3PH via slurry when tested about 2 weeks in, which I thought was odd since the tap water I use is 9.4PH. Around this time I added about 1 tsp dolomite lime sprinked to both plants. 2 more weeks later with the onset of Plant 1 issue, the slurry test is showing 6.3 and I added another tsp of dolomite to plant one only + 2 tsp of azomite to both plants.
Plant 1:
These leaf spots have been appearing starting about a week ago, my guess was leaf septoria, mg or calcium deficiency. This is appearing on maybe 4-5 leaves.
Plant 2:
Yellowing of the leaves. Looks like N deficiency but logically it doesn’t seem to make sense considering I started adding nutrients the day before.
If youre using Happy Frog, then treat it like soil as far as ph. You are in early stages of flower, so you want your ph to be 6.5 to 6.8. If using salt based nutes, make sure to follow their flushing schedule. If your ph is hovering at 5.9 you have locked out nutes needed for flowering. I would recommend flushing with ph water at 7.1 to 7.3 to raise your ph
