S
Seal-Clubber
Buddy over night does not cause this.
Yes it does.. over-watering with too rich of fertilizer and plenty of light. Over-watering with high fertilizer has rotted the roots and the plant is saying, "i`m dying". take a look at my gallery and tell me I don`t know what I`m talking about. ps - your albums are filled with cartoons. lol
spraying too much junk on the leaves is bad but cal-mag? I can hit my shit with tones of it. It CAN clog up the pores on the leaves and this can choke the respiration of the leaf, this will aid in further problems. I suggest spraying the leaves with pH water @ 6.8.. This will wash off any clogging the leaves may have from the cal-mag. and BTW, you don`t need cal-mag, you need to fix the root problem.
The serious truth is, take a look at that third picture... that is not run-off burn from cal-mag spray. That is discoloration between the veins of the leaves, this is a root problem. The mega-loads of light he is using will push the plants to their limits. The more you do this, the faster problems can happen. Only an exp grower will know this.
The leaves started curling down because the soil is not aerated enough and roots lost their uptake of calcium. spraying too much on a dying leaf will not cure the problem, only make it worse if it clogs the pores on the leaves.
Need your soil to drain more, dont feed it anything but ph 6.8 water - if your ppm is 3000 or so. Use more perlite. 6.8 is good because it will rebound your low pH(salts + water) and stagnate rotting. Poke large holes into the soil so it can air-out better. You can grab 1/2" hoses and poke holes in them, put a few about 6inches deep in the soil with the tops sticking out, around the base of the plant.
This will help you air out the soil faster, also place a fan blowing on the soil tops too. You still need to flush a little but that soil needs to dry out more or else your roots will rot and plants will die if you continue to flood the root zone. You are going to have problems if your Total Dissolved Solids remains at 3000, you have TONES of light, too much TDS/ECC, and too much water stagnation in root-zone.
good luck!