Hi everyone,
I’ve been growing for a while, and this year I decided to test a different soil mix. The current composition I’m using is:
- 85% peat moss + perlite, mixed 1:1
- 14% worm castings
- 1% vermiculite
- 1 tablespoon neem cake
- 1 tablespoon dolomitic lime
I let the soil “cook” for approximately 25 days, watering it with pH-adjusted water around 6.2. Before planting the seeds, I measured the runoff pH, and it was stable at 6.6.
I watered lightly with pH 6.2 water on the first day. After 10 days, once the soil was already dry, I watered again with pH 6.2 water and added BioBizz Fish Mix at 1/4 of the recommended dose for this stage.
About 5 days ago, I noticed a few fungus gnats flying around the root zone, so I set up yellow sticky traps and increased air circulation. I also added an extra layer of perlite on top of the soil, around 2 cm thick.
Today, I noticed the leaves are turning yellow, as shown in the photos.
Does anyone have any idea what might be causing this? And if so, what would be the best way to fix or manage the issue?
Setup:
- Current pot size: 0.8 L
- Light: 120 W LED
- Average temperature over the last week: 26.4°C
- Average relative humidity over the last week: 58%
- Strains:
- 2x Special Queen — Royal Queen Seeds
- 2x Special Kush — Royal Queen Seeds
- 1x White Widow #1