Update
Thanks for the input. After the initial adjustment in EC things have been stable over the last 24 hours. I think that perhaps the solutions were not well mixed when I poured them in the reservoir and they just mixed up after the system ran a couple cycles.
The plants don't seem to have taken too hard a hit.
Also, I am pretty sure my EC meter was misbehaving because of a low battery situation. This is a cheap meter and it does not give a low battery warning like my old one did. I replaced the batteries and I am back to reading what I expect.
Thanks for the input!
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