Thanks for the tips. I'm using RO and MSU fertilizer. i usually aim for 25-50ppm nitrogen, but for these i've been cutting whatever I've made up for my semi-hydro stuff 2-3 times with RO. I haven't yet seen any signs of nutrient deficiency, but that's what I'm most familiar with looking for. I'm not quite sure how to detect salt buildup outside of visible "crust". Do roots show characteristic damage?
I'm playing around with non-moss options. I've got a ton of the hygrolon mesh stuff. I'm exploring having some under the plant, and maybe have some moss on top where it easily replaceable and would be more aesthetic than the black wick mat. I'm also playing with a chopped of mix of moss and fern spores to try to "grow" some more moisture-retentive areas.
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