Thats correct I put em out at about 9 or 10 when it warms a bit, then bring em in and put em under the cfls, they are on 24 now , dont wanna start 20/4 until I get a couple more bulbs, and now with that info you gave on tgey adapters, will be tomorrow hopefully,,,, and sadly that is tgey negative side of time release, since I try not to water to often, they dont get the right amount of nutes,, plus it hold moisture pretty good if you dont as perlite,(which I forgot, but adding when I transplant final time in 4weeks, and then imma flip, and hope for the best,,,, ill be better equipped, by time I flip though