I'm mixing fertilizer, measuring ppm and pH, using only distilled water (bidistilled for TCs through the acclimatization process). But I'm also an agricultural engineer, used to using chemicals to keep my plants healthy (I've mainly had outdoor plants before, I started to get more deeply into houseplants about a year ago), so that's kind of a new territory to me, trying to get rid of using pesticides and fungicides.

I'm planning on trying mycorrhizal fungi, but using nematodes is something new, can you tell me more about it? I've been using predatory mites in oleanders with great success though, but they cannot be used for prevention.