ok so i am doing a dwc setup, heres pic
new pics 045.jpg. the back row right now has i believe a nute burn or ph problem. To switch out the reservoirs i have back ups of each tub and just fill accordingly and switch the lids. I did a flush by making a tub full of tap water with a slightly high ph (8.3) and a pretty low ppm of 65. I then just took the lid and put the plants in that water after i adjusted the ph to 5.7. After a day I added full strength nuts. the plants dont look any heathier and i dont know if i should just make a new res again tonight. I am using a formula i found online called the lucas formula which can be found
here. the ppm jumped to about 750ppm after the nuts were added, and the ph was adjusted to 5.7 again. Any thoughts would be greatly appreciated and sorry for the scattered thoughts im wicked baked lol oh and i thought i would just give some specs, temps min74f max82f, 400 watt mh, 18/6 about 22 inches away so lights doesn't hurt the babies