I think ph is a little bit low, use a ph up to regulate up at 6.5, and also use a thermometer for water’s temp, with 21degree of solution your babies receive more oxigen with nutrients, is the best temp for drink your ladies! I’ve try also with a spary solution with N in high percentage (0.2 ml/lt) and I see the differences between the 2 grow! But are already beutiful!
Peace love and enjoy man!
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