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Message: <blockquote data-quote="Ray" data-source="post: 701878" data-attributes="member: 45">Terry,I made the switch in some (most) of those just before coming indoors for the winter, so most of my experience is in a somewhat cooler, drier environment.  I always water with K-Lite, and try to keep up with once a week @ 100 ppm N, but that has occasionally slipped a few days.  Once a month I add KelpMax and Quantum.  In the summer, when the plants are out on the deck, where it is much warmer, far for humid, and with brighter light (still indirect, as they’re along the north side of the house, just outside the Low-E windows they’re in front of now), I feed at 50 ppm N about twice a week.LECA is an acronym for Lightweight Expanded Clay Aggregate, of which Hydroton is but one brand name.I don’t consider inert media to be “fussy” about nutrition.  If anything, I think it gives the grower more control, but then again, I’ve been growing in S/H culture for 30 years, so I’m kind of used to it at this point.</blockquote>