[untamed]

Originally Posted by bassman

Has anyone ever considered mounting a float switch just above the water line in the main tank so that if the water rises too much the return pump is shut off?

I have one installed on my tank and I sleep much better at night.

It isn't really necessary. The Emergency pipe does a perfectly reliable job. In a worst case scenario, the primary pipe stops completely...water rises to the emergency level which then takes all the flow. This wouldn't even be anything that needed urgent attention.

In my case, putting 100% of the flow down the emergency standpipe creates an unbelievable noise!

I run with no strainer on the primary. It is just a bulkhead at the bottom of the overflow box. My overflow boxes are covered and nothing larger than 1/4" could get into the box, so I don't think there is any need for a strainer on the primary. Anything that did get in would just fall straight through into the sump.