I have a second float on mine for a high level stop. So if the sump water gets too high, it kills the top off pump. Plus my top off is not fed directly from the RO
. I limit the top off to about 20 gal
of water. Suckes to fill it up every few days but give me piece of mind. When I went on vacation, I just use a bigger container.
I recently had my frag tank overflow due to a clogged drain. Nearly pumped my sump dry. I burned up my skimmer pump but did not hurt my return thankfully. I hope to set up a low side float to kill my main pump if the sump level gets too low.
*180 gal Display, 100 gal basement sump, 33 gal refugium, 3x250 MH, 2x160 VHO actinics, zoos, some softies, LPS & lots of acros and other SPS.
*100 gal prop tank plumbed into main system w/ 2x96 PC lights and 1x150 MH,