Outdoor Coco 2nd grow.

Running in to a caterpillar problem, leaves getting chewed on the daily, picking off at least 5 of the fuckers everyday, sprayed with BT (Bacillus Thuringiensis) 2 days ago on the 31-11-20, i will spray again in a few days. The 2 OG's are just starting to go into flower. All plants are suffering with burning on the tips of leaves, so i decided to do a proper flush with 700-750 ppm nute solution. I did get a bit lazy the last couple of weeks and haven't been watering with enough run off every watering so I'm not really surprised. Tested the initial run off: GC 1 was reading 1180 PPM with a PH of 6.0 GC 2 was reading 980 PPM with a PH 5.8 OG 1 was reading 1100 PPM with a PH of 5.9 OG 2 was reading 1260 with a PH of 5.8 Flushed all until run off = PPM going in or within 50PPM (700-750PPM) I will be trying to make sure i water until i get at least 15% run off every time. The 2 GC are a height of 57 CM (would of been about 70cm without LST OG 1 is 60CM and OG 2 57CM Hopefully i can get on top of the caterpillars soon enough. All in all, learning a lot and pretty happy with how things are goin. Oh after thought, added a layer of perlite on top of the coco to try keep a some moisture in as its summer now.