Thank you so much for the reply and info.
Im in south america, 20 degrees south of equator.
Unfortunately those products arent available here, I've heard very nice things about them. It's hard to find someone who doesnt like fox farm happy frog.
My prefered media for organics so far is Mel's Mix (square foot gardening book)
1/3 peat/coco
1/3 aeration (vermiculite, perlite, rice hulls)
1/3 compost (I use 50% 60dayold chicken manure and 50% home made worm castings)
I ammend this mix with bone meal, gypsum and
lithothamnium calcareum algae, which is a calcareus algae and contains calcium, magnesium carbonate which
in theory are more fast-acting and bioavailable than dolomite lime, and have around 70 micronutrients + aminoacids. I also water with algae extract (
kappaphycus alvarezii)
diluted at 1:10000 (1ml / 10L) for the phyto hormones and whatever else is in there
plus powdered humic/fulvic acids also diluted @ 1:10000 (1g/10L)
For semi-hydro I use straight zeolite (2-3mm size) which is a mineral also called
clinoptilolite. there are many types of zeolite.
The one I use is sold as swimming pool filter media (it absorbs ammonia, so you can use less chlorine in your pool)
and use basacote (5g per liter of media) and water with 0,5g/L gypsum dissolved in it, to make sure that water has 100-150ppm calcium.
Many people thing gypsum is insoluble, but at this amount it dissolves, but takes a few days, so I prepare a big batch 3 or 4 days before
or use calcium nitrate to get 100ppm Ca if not in flowering, as too much nitrates tend to interfere in flowering for some strains.
Sometimes I mix in kitty litter (diatomite 1-10mm in size), not the type of litter that swells when moist.
Normally I use Tidy Cats by Purina, but there are other brands.
Diatomite when crushed and micronized is sold as diatomaceous earth.
Thanks again, Ill definately check those threads again from the beginning.