diagnosis please?

i noticed the brown/orange veins and the overall spindly and lighter green leaves/plant. Iguana grow, calmag plus and great white in a tap dwc. Any suggestions?

could be over fert because the new leafs are curling down i see some other problems but i need some more pics what size pot are you useing and what is your feeding scedule? can i get a pic from the side of the plants?

5 gallon dwc. I just rinsed and am currently flushing with water and great white. I used half the recommended of iguana juice and cal mag plus for 4 gallons along with great white up until now. two airstones 4 gallons of water.