SOIL Seedling leaves discolored

[Johncena]

Three weeks old autoflowers. Tip leafs are getting discolored if you can look closer tip of the smaller leafs are getting discolored. They were under direct sunlight for a time yesterday.

I feed them 4.l/l root juice from bio bizz. I have bio bizz light mix substrate.
5 days ago i feed them red worm casting tea 1 part casting 4 part water. In general they are healthy and good looking. And been growing well imo. Any ideas what could be the issue ?

[dilvish]

just makes sure you are not overwatering and giving correct amounts of nutrients. Even if the PH is fine (6.5-7.0 in soil) overwatering can cause nutrient issues as the plant can't absorb the nutes if the roots are too wet.

A day in the sun won't mess with them unless that day happens to be a real scorcher (32C or higher all day)

[Johncena]

dilvish thanks for your comment. This is my first grow ever. All are autoflowers.

Because the pot is big for the seedling i am having issue with overwatering. I watered them today after 7 days I think the compost tea and colder nights is what making the substrate being wet for so many day before that it took 3-5 days to dry out.
I put water in the middle where the stem is and wait for like 5-10 drops run off water comes out.

This ak and other ak strain seem to react good but i have one Amnesia haze strain that don't like water that much for some reason she is drooping now.


I am thinking about when i transplant them i will swich to bio bizz nutes instead of red worm compost tea. Still using bio bizz light mix substrate. Do you think that might help ? Because right now i am not sure how much nutes i am giving with red worm compost and what is the nutritional value, the value on the packet got faded.