Woke up this morning to the big waterfall doing the surge and stop it does when water level is low…
ran out to see that the little filter is leaking bigtime…clogged.

Ah, me, first filter-pass of the season. I’ll add more water and haul out the filter pads from the little filter, which will weigh a ton, and wash them, then restart, and may have to do this more than once. We’ve never started the pond with the little filter engaged: live and learn, eh?