When to add light to seedlings, even if all haven't sprouted
Hi folks! Just a general question. I've got about 24plants that I'm starting from seed (Tomatos, cukes, peppers, etc...) and I noticed today that at least 10 of them have sprouted after only about 4 days! I've currently got them on a wicking mat that sits on a tray of water, that sits on a heating pad. For the 4 days I had this whole setup covered under a clear bin. What should I do here? Should I move them out from under the bin to the grow lights or should I wait for the rest of the seeds to sprout?