I've got about a dozen 6 week old Lophophora seedlings growing under a low watt light. So far they are doing great! I have been thinking ahead to this winter, and I am unsure if I should cut the water and light for the winter or if I should continue their steady diet of light, heat, and water. They will still be quite small by the time this winter rolls around and I want to make sure that they stay healthy. If anyone has any experience regarding this situation, it would be much appreciated.

keep them going under lights
at that age stalling them isn't what you want.
cheers

Thanks DG!, I really appreciate all the Cacti advice I've gotten from you the last few years. I am excited about my new Loph garden, I will be grafting soon (pereskiopsis), I love watching these guys grow.
When you graft, have you had success with grafting both top and bottom cuts of the seedling? I've heard that the bottom cuts may pup from the roots once established.