Originally Posted by
kbag
Well if your confident it is not the light, knock up a foliage spray of calmag 2ml per litre. Give the plants a good drenching and spray the underside of the leaves to.
Make sure you raise the lights as high as they go and possibly turn one off and allow them to dry completely before putting lights back to normal.
In 2 days you should see a difference do this a max of twice a week. See how it goes but i would imagine them cubes retain a lot of moisture so just watch watering as well.
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