Sorry Ti, I saw you asked that before and I passed over it momentarily and just forgot.
In pulse mode you set two speeds, both between 30 and 100%, whatever two you choose. The pump then pulses at a number of seconds you set between 1-7sec between these two speeds. The speed range is the same as what the the driver offers. If you want to use your 6000 we could do a couple things, sell you a smaller prop from a 6060 or change it over to a 7200/2.