When to start giving nutes

Have 2 seedlings 2 weeks old, when to start giving nutes

I have for veg
Fish mix
Seeweed liquid organic
Tomato feed

2-3 weeks old is when I start and never had issues. Go slow. Make sure you follow the guidelines or charts that the company gave you or you might give too many nutes! I try to make sure I have 3-4 nodes on my babies before starting nutrients. You should be fine as long as you mix it properly for the age they are.

I start feeding (and ph the water) when the cotyledon start to fade/yellow/shrivel.

Have fun