Still new to the pool world, still learning so much! I have been noting green bundles at the bottom of the pool, mostly in the deep end towards the drain. Water is very clear, no issues with chlorine. SWG keeping FC in the nine range. CC is consistently 0.0. CYA remains a bit low at 40-50, though I have added recently. pH tends to be in the 7.6-8.0 range. I add MA maybe every 4-6 days. Attached photos. The little masses seem to essentially cloud and disappear when disturbed by a net, though some is recoverable. The robot definitely is picking up a very slimy, gooey matted substance. Is this algae? Any actions I should take?