When should you first water sprouts after transpla...

let top part of soil dry a bit.. if a couple week old or younger, maybe 1/2" or so? if the pot is big for the plant -- water in a similar way, but in a smaller radius around the plant. make sure the water runs deep like you did before.. just not the entire pot. It will be a better wet/dry cycle for the plant. assuming this is soil? in coco it'd be ab it different. As far as vege light.. they should be fine. It doesn't take long for a plant to handle some fairly intense light. defintiely to avoid stretch