I haven't gotten a chance to get up to town to pick up some salt, so I ended up adding the PS to my big IBC system. I am afraid they are too small and will get sucked out of the tank and into the filters, so I built a small tote in connection that the water runs through.

Here is a picture of the tank I have them in now.

We have been having some warm weather here, so the water in the large system is holding in the mid 60s. They are being fed twice a day now. I decided not to get an automatic feeder, because I am afraid something might go wrong and fowl up the water.