3 strain-flood and drain-hlg260

I see a few issues that you have going on. First your nutrients are incomplete. Of you are running the Lucas formula you should be running the florabloom along with the floramicro. The GH bloom you are giving is an additive. Not a base nutrient. The liquid koolbloom is a flower booster additive also, not a base nutrient. You are giving double the max dose of that right now and it is early to be feeding it. It can also cause issues to be flooding your rockwool this early. The roots are easy to overwater until they grow out of the bottom of the rockwool. Most nft growers just dip half the block in nutrient solution when they need watering and start flooding them on the table after you have a nice root system built up and growing out of the cube. I would really recommend putting them in veg and get them healthy before trying to flower them. Feel free to message me and I will be glad to share any info I can to help you get them back on track. Good luck!