i have two jbj ato's lying around somewhere.....you can have one for a pic of your puppy....lol. i think the float sensors need a good cleaning though.
i replaced the jbj with one from autotopoff.com. it uses dual sensors on a single mount which fit my sump better. the jbj need two mounts and their mounts aren't the greatest.
never seen the rear chamber of the redsea so you'll have to see for yourself.
i'm in 07458. pm if interested.