Well I use Miracle Grow plant food but it's really the only option I have right now. And on the box it says that they don't recommend foliar feeding. So can I just use water or is that just pointless? My best plant started to develop these spots on its leaves the day before yesterday. They're yellow and they just start at random parts of the leaves. They're all 3 1/2 weeks old and on their 7th node. I don't really want them to get that big. Maybe 3-4 feet max. Can I just switch them to 12/12 and start flowering or is it too early? I kind of want to fix these problems I have before going to flowering. I'm still trying to get something for my pH, I just know that the water going in is 6.5 but I don't know after nutes or anything.