This is my first grow about 3 weeks indoor under 300watt led 18 hours on 6 hours off. The girl does not seem to grow and leaves are changing colour need help in getting my grow right. Ph is 5.9 and tds 499.
Are the roots hanging from the net pot down into the nutrient solution? The level of the solution should be 1-1/2" - 2" or 35-50mm below the net pot. Until the roots reach down into the solution, a top feed dripper is often used to feed the plants.