those threads were one of the first thinks I read when my problems ocured, even before you satrted helping me. They very good and very thorough and also easy to apply. BUT. more you read, more you get confused. I almost feel like I've got half of the problems discriped. Like those yelow tips. Nute burn as table says. Than I've got yelow bottom leaves. NPK and Mg def. So it is not easy. From those photos I posted it might look like it's still same, but those yelow leaves on the bottom are leaves which were fine on the photos from monday,or whenever I posted the last ones. Regarding water, I have swaped tap water to mineral drinking water which is 6.9 pH. That was yesterday. I've done so, because I honestly don't know where the hell I can buy destilled water in London. What do you think about those light green edges? Iron def? But then I gave them Trace mix with iron 2 times in last 12 days. I am really hopeless...