OK help please! My mystery Sweet Seeds girl has developed this problem:
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It's the veins themselves which are yellowing, and as you can see there are lighter brown patches on some of the troubled leaves. It started round about mid-height and has spread up and down the plant. I've tried doing a google search for yellowing veins but there's so many conflicting opinions I don't know what's what.
Has anyone experienced this before? The last time I watered I added cal mag and bloom to the water, and adjusted the pH afterwards. Should I do it the other way round? The natural pH of the water here is around 8.2. Should I adjust the pH before I add the nutrients?