i had that problem to, i threw some plant food in [these little balls ur suppose to mix with the soil] they slow release the chemicals so if you put to much in it wont burn the plants, i threw some on top [since they are already in flower] n its still healing but i've seen imporvement. [gunna love this one] before i got the plant food to help Nitrogen levels i pissed a little bit in the water i was watering my plants with and mixed it up [i stress the A LITTLE BIT part, becuz piss has HIGH Nitrogen levels, so dilute VERY WELL and let sit so the piss can break down]