Hi.
I have 6 seedlings, now 4 weeks old. This is my first, rookie, grow.
4 seedlings look healthy and strong. 2 have developed a worrying shrivel.
My research would indicate the following possible causes.
- I have got the watering wrong? I don't think I have under-watered. The soil is very free draining.
- I have over fertilised - I have only watered with a very dilute Miracle Grow solution after the 2nd week. Might the potting mix be too rich for sensitive seedlings?
- Light is too strong - Envirogrow 2 T5 tubes - around 8 inches above. 18 on, 6 off.
- Too hot? 27 Centigrade max.
- Wind burn. From a small USB fan?? The other seedlings are thriving.
- Pest?
- root rot from over watering? All the other plants have been treated equally and are thriving.
Anything obvious I am missing - your wisdom/appraisal would be appreciated.
Thanks in advance,
T
------
What Strain is it? Mango Kush
Is it Indica, Sativa or Hybrid? Hybrid - more Sativa?
How Many Plants? 2 affected, 4 thriving.
Is it in Vegetative or Flowering Stage? Veg.
If in Vegetative Stage... How Long? 4 weeks
If in Flowering Stage... How Long? n/a
Indoor or Outdoor? Indoor
Soil or Hydro? Soil
If Soil... What is in your Mix? Commercial high quality potting mix.
If Soil... What Size Pot? 4 inch seedling
Size (Wattage) of Light? How Many? 2 or 4 tube T5 Fluoro
Is it Air Cooled? Yes - small PC case fan to extract cabinet air + small oscillating fan inside to stir airflow.
Temperature of Room/Cabinet? 22 - 28 C
RH of Room/Cabinet? ~60%
PH of Medium or Reservoir? Not measured
Any Pests? None seen
How Often are you Watering? once every 48 hours during first 3 weeks, have reduced after week 3 (am I over watering?)
Type and Strength of Fertilizers used? Very dilute Miracle grow
Size or Square Footage of Room? 20 inches x 40 inches, 40 inches height.
I have 6 seedlings, now 4 weeks old. This is my first, rookie, grow.
4 seedlings look healthy and strong. 2 have developed a worrying shrivel.
My research would indicate the following possible causes.
- I have got the watering wrong? I don't think I have under-watered. The soil is very free draining.
- I have over fertilised - I have only watered with a very dilute Miracle Grow solution after the 2nd week. Might the potting mix be too rich for sensitive seedlings?
- Light is too strong - Envirogrow 2 T5 tubes - around 8 inches above. 18 on, 6 off.
- Too hot? 27 Centigrade max.
- Wind burn. From a small USB fan?? The other seedlings are thriving.
- Pest?
- root rot from over watering? All the other plants have been treated equally and are thriving.
Anything obvious I am missing - your wisdom/appraisal would be appreciated.
Thanks in advance,
T
------
What Strain is it? Mango Kush
Is it Indica, Sativa or Hybrid? Hybrid - more Sativa?
How Many Plants? 2 affected, 4 thriving.
Is it in Vegetative or Flowering Stage? Veg.
If in Vegetative Stage... How Long? 4 weeks
If in Flowering Stage... How Long? n/a
Indoor or Outdoor? Indoor
Soil or Hydro? Soil
If Soil... What is in your Mix? Commercial high quality potting mix.
If Soil... What Size Pot? 4 inch seedling
Size (Wattage) of Light? How Many? 2 or 4 tube T5 Fluoro
Is it Air Cooled? Yes - small PC case fan to extract cabinet air + small oscillating fan inside to stir airflow.
Temperature of Room/Cabinet? 22 - 28 C
RH of Room/Cabinet? ~60%
PH of Medium or Reservoir? Not measured
Any Pests? None seen
How Often are you Watering? once every 48 hours during first 3 weeks, have reduced after week 3 (am I over watering?)
Type and Strength of Fertilizers used? Very dilute Miracle grow
Size or Square Footage of Room? 20 inches x 40 inches, 40 inches height.