I mean, they're both magnetic plates with mixing bars at the bottom... I'm not sure they're that much different. If your reactor sits flat, you could set it ontop of the magplate and drop the bar in and then you have a stirrer... Unless I am missing something obvious?Those are great for mixing stuff! But i am looking for something different. It is like this:
KM-150 Magnetic Kalkwasser Mixing Reactor
No More Broken Stir Bars or Replacing Expensive Mixing Pumps! Kalkwasser is one of the oldest and reliable ways to add calcium and alkalinity from a single solution and using a reactor makes the addition of a kalkwasser solution easier. The IceCap KM-150 Magnetic Kalkwasser Reactor uses a...www.bulkreefsupply.com
A kalk stirrer is alot different than what u posted. You can dump alot of kalkwasser in a kalk stirrer and it will keep kalkwasser saturated in the water inside the chamber. You can feed the reactor with your ATO or a dedicated pump on an timer.