Please help - Leaves curling like weeping willow

These plants are 1 week into flowering and they are growing on 4x4 rockwool cubes and clay grow pellets.



I have been using GH Flora Nova One Part Bloom 4-8-7 at 2 teaspoons per gallon and GH Floralicious Bloom at 1 teaspoon per gallon.



They are growing in a drip system. The drippers were on for 20 minutes 4 times a day. I adjust PH every 2 to 3 days to about 5.5.



The light is a 400 watt MH and a 430 watt HPS.



The pictures are of the two worst plants but others also are showing similar signs.



Can anyone please help me get these plants healthy?



Thanks.

 

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