re: Tomato Seedlings

I'd def hit it with a more complete fertilizer. With both micro and macronutrients. Make sure there is some iron in there. I use big arse tomatoes to start out my plants then after first blooms I switch to tomato tone for more phosphorus and potassium vs more nitrogen. The big arse tomatoes has iron in it. Miracle grow organic has iron in it but a lot of fertilizer doesn't. You could also just supplement with some chelated iron or something like seaweed kelp.