While I don't want to discourage you from buying new equipment
, I have the Apex and WXM module and I don't think you can tell it to have a minimum speed (if there is a way, please someone tell me!). The WXM module lets you set max speeds like you can on the base controller, and lets you change the program that's running over the course of the day, but you can't really create new programs or set minimum speeds or anything like that as far as I am aware.
For example, you could have it set on reef crest for three hours in the morning, then go to tidal swell, then go to lagoon, etc, but you can't do anything with those pre-made programs that you couldn't do on the ecosmart driver. You can have different instructions for different cases like different feed settings lasting for various amounts of time and all that, which is very useful, but unless your'e willing to spend several hours writing your own program using the constant speed profile you're still stuck with combining what's already in the ecosmart driver.
I suppose you could program your own, but Apex code looks like:
If Time 08:00 to 08:15 then (insert name of a profile you created HERE)
theoretically, you could create profiles for constant speed settings between 50 and 100%, and then do a different code line for each one, but if you were trying to cover a 24 hour period that would be... really awful.