Hi guys today checked my plants and couple of leaf s tips was yellow could someon tell me if it's nute burn or plants are to close to light or something else.. there is some couple of images i will attach.. They did 8 weeks in veg and i just changed them on flowering + added all the new bloom nutes in and after 4 days now they had these leaf s just couple, mostly on top mid part. I'm using hps 400w but it's in cooltube ..and I'm using a nft reservoir. Checked the ppm and it's normal around 1000ppm What I did use when the problem appeared is some sort nute what I sprayed over the plants but not sure if it's the thing what made leaf s do like that..
I know nothing about NFT, but 1000 ppm (assuming EC=2) would fry my DWC plants. They hate it when I go above 500 ppm (EC=1). Light burn might then exacerbate nute burn.
Thnx for replay... this is my second grow and I never had problems with nute burn always I ranged from 900ppm till 1000ppm.. all this time everything was fine do :/ hmm