Where can I get a flow controller?

Chris,

Perry said the following in another thread:

I assume that WCR will be selling it, too, when it comes out in May. Anything you can share with us at this point about this? It’s intriguing that he said “unique style”. Make me curious… Should I wait until then?

Seems like the current and future options are:

  1. The current RHG offering with 50 or 100 gallon tanks, flow controller, 12V pump, and battery box, all framed together.
  2. New Spring (Europe) flow controller in a couple of weeks.
  3. WCR offering a pump box with flow controller.
  4. Perry’s new tank/pump/controller offering in May.

Any other option beside these in the next few months? Thanks.