Athosanswered grow question 6 years ago Don't raise the EC. Even 1.8 is might be too much for soil. Your leaves are showing signs of over dose (burnt tips and raised edges). In soil you want to feed once every 7 to 10 days, not every 2 days and specially not everyday. Unless you tap water is too soft (say EC below 0,3), there's no need for calimagic and even if you needed a little extra, there's enough in floranova grow. The yellowing is normal at this stage.