Curling Tips

When you have dark green leaves and the leaves that are clawing on the tips then you have a Nitrogen excess ( the same symptom on the leaves without the dark green means something else ). So the Claw will not disappears as they are now the new shape of the plant so they can recover from the nitrogen excess but will keep the clawing on the tips. You idea is not the best , I mean you wanna add extra nutrients to counterbalance the nitrogen with PK but you are not lowing your N amount ( which is causing your excess ) . When you have an excess you flush , check the runoff ph and ec/ppm to have an idea of the nutrients amount and then you add extra nutrients : remove before you add for an excess and add more than you remove for a deficiency