Stickanswered grow question 6 years ago Hi there! Your feeding schedule seems to be correct. This looks like a LED-burn to me, those little dots appearing at the same position on different leaves also happened to me in the past, my light was too close to the plants, those dots/spots were the first signs to appear. What's your light distance? The hand-test is quite universal. Hope this helps, I'll be around, keep us up-to-date and happy growing!