Had to do a scrubber cleaning, as some strands of long hair turf algea were jamming the balls.
It's free food for the grow outs.
Nothing critical, that will effect the over all filtering.
I pulled 8 balls as they had snags were I drilled the holes, they were all floaters.
My earlier balls have 1/4" holes vs the 3/8" , and are prone to trap air.
The hole are not perfectly 90 degrees apart on all 3 axis.
The poor boy sieve has been working good, it requires a bleaching every 4 days. It has kept filter sock going for 10 days between changing.