All is well, but I couldn't find a definite cause. The soil pH was a little high, but not enough to cause any problems. Soil is now mid 6's, down from about 7.

I'll have to chalk it up to transplant stress going from a large amount of rockwool at low pH to soil at a full pH point higher and them having to get used to their new environment. But, those were the plants I had... in the future I won't try to transplant larger plants from hydro to soil.

Here's pic of some Flo looking good...