I use mg all purpose 24-8-16 for veg stage. I know of a few people on here that use this. I've read that they are nutes for dummies.....lol. And if they are 'seedlings' they are too young to feed. They should be a least 3-4 weeks old. To answer your question, there shouldn't be any reason to foliar spray....just in thier water and ph the water after adding nutes.

:jointsmile: Bree