Hey guys, my plants are having some trouble and I'm accepting advices... So, they are at the 6th week of flowering and, since about two weeks ago, they started to present some problems.
At first, I thought it was light burn or too much heat, as the lights of the grow were replaced three weeks ago, from 210W CFL lights to a 250W HPS (31k lumens) one, without cooltube and, at first, the yellow and burnt leaves were only the ones receiving direct light. The HPS light was placed around 30 to 35 centimeters from the canopy, but, a week ago, I moved the light to about 40 cm from the canopy, and the problem persists, even affecting leaves that are not directly under the lights...
Then, I increased the Mg on the weekly dose of ferts, imagining that it could be a Mg deficiency, but that didn't did the trick. I also tried to flush them with 6.5 ph water, to no effect (it was not a proper flush, though). After all that, the leaves are still slowly being affected by this problem and the buds are not getting fat in a satisfactory manner.
The plants (a Somango and a Super Silver Haze) are being fertilized weekly with BioBizz - Bloom, 10ml; Grow. 6ml; and Alg-a-Mic, 6ml - and Magnesium Sulphate - two teaspoons. Any ideas?
Super Silver Haze, the least affected oned (sorry for the lying down pictures)