I'm around a month into flowering and I can't seem to get my plants fully healthy. The tops have looked fine with no tip burn. They have a bunch of tiny yellowish white spots, though. A few of them are starting to lighten all over. The lower leaves have been turning yellow rather quickly. The tips on some of the lower leaves are yellow with some brown. They appear to be eating themselves. I feed them around a tablespoon of Foxfarm Big Bloom every other day with a weekly flush. Can anyone diagnose this? The unhealthy bottoms are my main concern. If anyone knows anything about the little spots, that would be very helpful, too. Thanks in advance.