Keith,
In case this is of any help, I had a really bad time growing my seedlings in my 50 degree basement this spring. They were stunted and yellow, and later leaves began falling off. At first I blamed the medium (with kelp meal that I had added) as it was different from previous years, but eventually it dawned on me that it was the salty water from the water softener. Once I had flushed the pots and used only rainwater, the problem resolved.
Linda
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