Training going well, TD1 appears to be setting buds nicely / preflowering. TD2 isn't quite as far ahead, maybe another week or so for her. I can't seem to keep stable nute pH in the rez either, it's rising like crazy (7.7+) in a day and there's no mixing pump or aerator in there. Added a mixing pump to help maintain pH and nute mix - monitor throughout the week.