gdupont
Well-Known Member
Yeah, I've just been using RO water, but I think it's going to need fertilizer at some point... And some people obviously use fertilizers for Disas.
I'm not so successful with Disa, but here is a couple with both N sources:
Dyna-gro Grow has 4.4% NO3 and 2.6% NH4.
Dyna-gro Hi-N-Pro seems to be better with less phosphorous, but it is a bit more difficult to buy.
Grow More Orchid Urea Free has 12% NO3 and 8% NH4, but no Ca, Mg, and B.
Jack's Orchid liquid 7-5-6 has 5% NO3 and 2% NH4.
Jack's Peat Lite 20-10-20 has 12% NO3 and 8% NH4, but no Ca.
I think I was using MSU + ammonium nitrate.
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