Problems with clones, overwatered?

[Dekki]

I dont know whats wrong with my clones.

they are growing in 11l pots with light mix.
Room temps nigh 24c, day 26c. Humudity 40%.

they are growing for 8 days.

Before i puted clones in soil they were nice dark green, then after 3 day they started to yellow. I give them EC 1.0 and ph 5.8 . And water them every 2 days by little. I dont know if there is too much food or salt in soil from past round or if they are overwatered. They are not growing as they should be. The other place is growing normaly with same sistem.
Any suggestions?

 

[Listersmeghead]

Hiya Dekki. Welcome to 420.
You said they're in light mix,what company is it? Bio biz by any chance?
Also, you have used the medium before, did you flush it(wash it) before you recycled it?
If it is bio biz, then the ph should be closer to 6.4.

 

[Dekki]

Hiya Dekki. Welcome to 420.
You said they're in light mix,what company is it? Bio biz by any chance?
Also, you have used the medium before, did you flush it(wash it) before you recycled it?
If it is bio biz, then the ph should be closer to 6.4.

Thanks for reply no its from plagron, i re used for 3rd round, its first time this is hapening, the other room just went to flowering with same soil, ph, temps and ec without problems

 

[Dekki]

Hiya Dekki. Welcome to 420.
You said they're in light mix,what company is it? Bio biz by any chance?
Also, you have used the medium before, did you flush it(wash it) before you recycled it?
If it is bio biz, then the ph should be closer to 6.4.

I flushed soil 4 times and added micro organisems

 

[Listersmeghead]

That plagron seems more of a peat based soil, I would try raising the ph to around at least 6.3 in this case.