'ello everybody! This is not really an urgent "help me"-post, I just have some questions due to small irregularities that I've observed on my plants recently. As the grow-geek I am, I like to know as much as possible about how my plants are doing. Anyways, thanks for reading :stoned:

This is a 5 week old NL plant. I've noticed some strange spots on the plant, and been wondering what they could be. I've had problems keeping the RH up, due to high ventilation requirements (I grow in a very small closet).

some fast details:

lights: 250w MH, 24/0, 15 inches from tops
soil composition:65% pre-fertilized soil, 35% perlite
watering schedule: every 3-4 days
fertilizer: BioBizz BioGrow + epsom salts
potsize: 5 litres

temperature: 80-85
RH: 25-40
PH: 6.7-6.8

pic1

Might these brown spots indicate a calcium deficiency? They are spreading very slowly.

pic2

These grey/bleached spots I guess are heat stress, but the plants haven't been exposed to very high temperatures. They're not spreading. Guess this is nothing to worry about?

pic3

bassically the same as pic 2

pic 4

The leaf on the lower right side in this photo shows magnesium deficiency right? I don't get this, as I've used lots of epsom salts to try to cure it (3ml/l).

Also, generally, new growth on both plants have gotten paler recently (brighter green). Could this be linked to magnesium deficiency, or is something else wrong?

again, TY for reading!
Elisabeth65 Reviewed by Elisabeth65 on . several small signs of something wrong, pics provided 'ello everybody! This is not really an urgent "help me"-post, I just have some questions due to small irregularities that I've observed on my plants recently. As the grow-geek I am, I like to know as much as possible about how my plants are doing. Anyways, thanks for reading :stoned: This is a 5 week old NL plant. I've noticed some strange spots on the plant, and been wondering what they could be. I've had problems keeping the RH up, due to high ventilation requirements (I grow in a very Rating: 5