Hi, I'm trying a 300watt led for the first time, the light is positioned about 30 inches above the plants as per manufacturers spec. However the plants's leaves are starting to yellow in the middle, and the leaves appear to be relatively small. Any ideas, as I'm considering just going back to the HPS, which is all set up and ready to go.
Cheers![SAM_1368.jpg](/data/attachments/2108/2108125-a554e711cc9c79daca39da018e310231.jpg)
Cheers
![SAM_1368.jpg](/data/attachments/2108/2108125-a554e711cc9c79daca39da018e310231.jpg)