Calcium reactor recomendations

[Pescador]

I'm looking to replace a tired K2R reactor on a 300 gal system with probably an average CA demand, not a lot of SPS.

Number one criteria is probably ease of refilling (no thumbscrews).

There's a pretty good deal on Schuran Jetstream1's right now but it sounds like you should use a peristaltic pump to feed it so that adds a hundred bucks or so.

Also looking at the GEO's and Deltec's.

Anyone have any feedback on any of these?

Thanks