I had an algae problem so I killed off the algae then followed up with a bottle of Sink and Sweep to clear up the water. I got a little ahead of myself. My multiport valve has a waste setting. But it appears to drain to a separation tank, not to an outlet. My question is: If I vacuum to waste, is the debris created by Sink and Sweep sufficiently large that it will be caught by the cloth bag in the separation tank? Or am I wasting my time vacuuming to waste?
I have a really old 72 sq ft DE filter. I've never backwashed or used the waste option on the multiport valve. I just change out the DE each time when it's time.