Leach
I recently leached the system for 36 hours with straight reverse osmosis water. I drained the system once during that period and refilled so that by the end of the 36 hours, after many floodings, the TDS was 30 ppm.
I then followed the instructions exactly on my chem-gro fertilizer, with the exception of not adding calcium chloride (don't have it). They said that if calcium in base water was below 50 ppm to add it.
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