I have several cuttings at different stages. I just transplanted a group that rooted in moss to clear containers w/ 60% perlite 40% promix in a humidity chamber under grow lights with bottom heat.

Another group that hasnt rooted yet on moss on the heat pad. (under the light as well since they share the heat pad.)

Yet another group in cups of perlite/promix that hasn't rooted yet on top of the water heater (probably upper 60's to low 70's temp)

Should I move those to under the grow light? They will be much warmer than from the water heater alone. (no leaves or roots showing)
Or should I wait on those?

Thanks,
Eric

I have grate luck with thewater heater. What i do with my cuttings. If i have any concerns with them. I use my grafting knife and scrape the very top of the cutting and see if it is bright green. If it is green i leave them be. Some cuttings of the same variety root at different times. This is what i do and have success in finding problems before its too late. Richie

I have no problems leaving them there. But now that I have a much stronger heat source on, (grow light), I'm just wondering if I should take advantage of the heat.

Definitely light and heat good. I didnt read your topic correctly. Heat pad are,very good. Hot water heater a close second. Mine stays,around 78 degrees. I use 1 gallon zip locks with coco coir moistend with vitamino. very little moisture is key. But your doing a grate job with lighting and heat together.