I believe you are poisoning your plants. It could be from calcium, but I suspect it is a general situation.
First of all 1 tsp/gal of MSU RO is about 175 ppm N. Personally, I'd not exceed 75 applied weekly, and I know a lot of folks who say 50 is the max.
Add to that the fact that Orchiata doesn't absorb well and dries rapidly. That means that you're probably concentrating the residues in the potting medium quite rapidly.
Add to that the dolomite used in the production of Orchiata, and your solution ion concentration is probably though the roof every time you water.
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