First grow, concerned about discoloring seedlings

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Hey. Been lurking a while and gathering info for my first grow. Looking for any insight on whats going on with my plants. Have a slight discoloration and slight curling sides. Attached pics is the worst one, the other two look a lot better but have a little of the same thing going on. I'm suspecting heat stress, or some deficiency though I didnt think I would see that so quick.

Conditions:
  • ProMix HP in 5gal fabric pots
  • GH flora series with calmag
  • In a sunroom getting some direct sun as well as a small spare bestva led a friend lent me until I can afford an upgrade
  • Heat has been hard to maintain on sunny days. Swings from 22c at night to 35c at times in the day
  • Humidity between 45-65

5 gal pots were filled with promix HP and presoaked with ph 5 water. I came to learn my ph meter was faulty and it has been replaced, I didnt realize the ph was that low at the time. Germinated seeds placed into here and no additional water or nutes for some time. Allowed the medium to dry out quite a bit before watering after about a week. Just kept the top damp with a spray bottle, shielding the seedling from water droplets. The medium definitely dried out a fair bit. I've taken measures to reduce heat and moved light farther away (from 28" to 30"). I have a tent arriving next week.

Younger pic is from day 9, older is day 12. So getting lots of growth but still concerned I should be addressing something.

Dont want to ramble too much, let me know if you need any more info.

20200720_125543.jpg20200723_170456.jpg
 
Last edited:
Hey. Been lurking a while and gathering info for my first grow. Looking for any insight on whats going on with my plants. Have a slight discoloration and slight curling sides. Attached pics is the worst one, the other two look a lot better but have a little of the same thing going on. I'm suspecting heat stress, or some deficiency though I didnt think I would see that so quick.

Conditions:
  • ProMix HP in 5gal fabric pots
  • GH flora series with calmag
  • In a sunroom getting some direct sun as well as a small spare bestva led a friend lent me until I can afford an upgrade
  • Heat has been hard to maintain on sunny days. Swings from 22c at night to 35c at times in the day
  • Humidity between 45-65

5 gal pots were filled with promix HP and presoaked with ph 5 water. I came to learn my ph meter was faulty and it has been replaced, I didnt realize the ph was that low at the time. Germinated seeds placed into here and no additional water or nutes for some time. Allowed the medium to dry out quite a bit before watering after about a week. Just kept the top damp with a spray bottle, shielding the seedling from water droplets. The medium definitely dried out a fair bit. I've taken measures to reduce heat and moved light farther away (from 28" to 30"). I have a tent arriving next week.

Younger pic is from day 9, older is day 12. So getting lots of growth but still concerned I should be addressing something.

Dont want to ramble too much, let me know if you need any more info.

View attachment 1216720View attachment 1216721
Hi there. For some reason i can't see the pics. But i would say that ph at 5 is the reason for the issues. Correct that and try ti control temp and rh. Happy growing
 
Hi there. For some reason i can't see the pics. But i would say that ph at 5 is the reason for the issues. Correct that and try ti control temp and rh. Happy growing

Whoops! not sure what happened. I've edited the main post to include the pics.

Yes that pH 5 was just for the presoak, ever since then and with a new meter I've been giving them 6.0-6.5 ph.
 
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