Yellow plants but not nitrogen?

[plantingplants]

Hi, I have some plants growing in coots mix and here's a few photos of a plant that seems deficient in something. A number of my first transplants look like this.. I'm thinking it was mostly the ones that were in one gallons-- the 7 gal plants on the whole look a lot better. This one was transplanted 17 days ago. I thought it seemed pretty light green so I fed some of them with N (fish emulsion at 1-2 tbsp/gal) plus a little micropak (4 ml/gal) with a little AEA Iron and Albion Calcium (1g/gallon). First I foliar fed with no results so then I watered just some fish water in. No change. The first photo is a healthy girl next to one of the sad ones, and the rest are different angles of one sad plant. I'm not sweatin' it but it's a little frustrating. I have a male I'm going to toss soon so I dumped a gallon of fish emulsion (4 tbsp) on it as a test to see if they're just really N hungry. We'll see.

 

[PoweredByLove]

some plants are just light green. you could try bumping the magnesium up a little.

 

[plantingplants]

Thanks. They're also exhibiting slow growth fairly uniformly. I haven't given them any Mg but my soil test indicates I have enough, although it's possibly locked out by my high K.

I did a test and sprayed a male with 2 tsp/gal epsom salt.