Deeze Nugs and Skywalker

All plants are droopy and both back pots have some rust of the leaves and claw leaves. FACTORS FOR DIAGNOSIS: Light - installed HGS 300v2 on Dec. 12. kept high the first day but now down to 16" from tallest plant. Nutes - gradually increased 1/8 all nutes on Oct 21 to 1/2 on Dec 9. B52 1, VOODOO 0, SENSI CAL MAG 1.5, MICRO 2, GROW 2, BLOOM 2 (*2.5 on back pots) BUD CANDY 2, BIG BUD 1. Watering - Dec 13 leeched with high ph water about 8 = not good as the leaves curled on back pots. over the next couple of days the front pots were droopy. Rust on 2 tips of back stretched plants formed. Dec 15 watered with 4.5 liters of 1/3 nute water. next morning the front right had improved slightly (although the leaves still look a bit "sick" they have perked up a bit) Temp/humidity. 23/55, all good dec 18: in pot 1, put 15 litres of ph 5.8 plain water at 1050 ppm, this resulted with about 2.5 litres of runoff at ph 6.6 and 850 ppm. i put in the final gallon with .5 ml/l of bloom and grow plus 1 ml/l of Big Bud and Bud Candy. these nutes increased the ppm to 1100 which i believe is the max at bloom. tested the runoff with the nute water and it was ph 606 but ppm down to 782. of the 15 litres put in the slightly damp medium about 7 liters of runoff. from the net: PPM LOWER IN RUNOFF THAN IN SUMP This is a good thing! This implies that your plants are taking up nutrients, thus lowering the overall ionic concentration! If you monitor this routinely and you see a standard drop (e.g., 1600 in, 800 out, 6 days a week), that implies that your plants are experiencing roughly the same conditions on a daily level. Keep in mind: if your PPM’s are super low in the runoff, consider upping your nutrient treat rates slowly, as your plants may be lacking in nutrients. PPM is higher in your runoff than sump. This buildup persists for a while, and then slowly dissolves back into the runoff, resulting in a higher PPM. The most common salts that are present in the root zone that are not water soluble are calcium-type salts (calcium phosphate, calcium carbonate, calcium hydroxide