Controller Question

[intarsiabox]

There is a similar thread out there but I didn't want to hijack it, so here's what I'm looking for suggestions on. I would like to get a controller but I've never used one before. My lights are LED and already have their own controller and I'm looking at upgrading my pumps to Tunze nano streams withe the USB controller as well. I'd like to be able to control temperature and see my PH level at any time. Not sure what else I'd use a controller for or any idea what controller to go with. Any ideas?