hey guys, one of my first posts (well first thread at least). Anyways, I transplanted a young tomato plant in a DWC bubble bucket about a month or so ago to test it and so far I've had no problems besides very mild nutrient burn at first which was gone soon after I flushed it. Anyways, now it's been under a 400watt Hortilux HPS bulb for almost 2 weeeks, and about a week ago I started noticing the leaves on some of the lower nodes were curling up. The new growth on the top looks great (and still does), except te lower things are starting to look worse and it's slowly spreading it looks like. The lower leaves are starting to get faint yellow spots on them and the first leaves that were hit have leathery bloches that are still green (more faint) that seem dried out. I don't know what it is, not sure if it's a disease or what. Anyways thought you guys might be able to help, sorry for all the reading haha. Thanks