light weight
Member
Hi
I need some help, this is my third grow with the same set up that i'm using and had no problems until now.
I'm growing in coco and under a 600w HPS, airflow is good.
My problem is or at least i think it's over fertilization (nute burn), i have black spots on the leaves which have developed over the last week but beforehand i noticed quite a bit of yellowing of the leaves.
I have flushed my plants twice but haven't really seen any improvement, they are still growing slowly, about 1" in a week and the new growth has a pale yellow colour to them on the tips.
My first two grows were from clones with no probs and these are from seed (white-widow) and about 4-5weeks old, started to fert at week three 1/4 strength. They stand at around 8" on average. I'm sure i've over fertilized because i upped their dosage by two fold because i thought they were big enough to handle it.
Here's some pics;
Any thoughts or suggestions?
THX.
Sorry for posting in the wrong section, feel free to move admin.
I need some help, this is my third grow with the same set up that i'm using and had no problems until now.
I'm growing in coco and under a 600w HPS, airflow is good.
My problem is or at least i think it's over fertilization (nute burn), i have black spots on the leaves which have developed over the last week but beforehand i noticed quite a bit of yellowing of the leaves.
I have flushed my plants twice but haven't really seen any improvement, they are still growing slowly, about 1" in a week and the new growth has a pale yellow colour to them on the tips.
My first two grows were from clones with no probs and these are from seed (white-widow) and about 4-5weeks old, started to fert at week three 1/4 strength. They stand at around 8" on average. I'm sure i've over fertilized because i upped their dosage by two fold because i thought they were big enough to handle it.
Here's some pics;
Any thoughts or suggestions?
THX.
Sorry for posting in the wrong section, feel free to move admin.