I used an old Penguin PH. That did a great job until I started using it again, whereas I switched to the free Mini-Jet. It works, though now I have a permanent salt crust on the bottom of the 10 gallon that didn't get mixed. Also, lol, it really pissed me off how they put the pump at the bottom of the bucket. I needed that thing right away! I ended up pouring the salt into this huge tupperware tub so I could get it. Just like cereal!