I have a sand filter which I do NOT run very long every day. Alternately, I do run a pool robot every day because this does a much better job of clearing the pool at 10% of the electricity cost to run. The pool robot does seem to clarify the "green" after each daily run.
My question is this: How long must I run the sand filter to clean out any remnants of algae within the system which is not in sunlight after the pool is back to a very very light green tinge. I have very little dead algae debris in the pool each morning.
Are sand filters worthless for filtering my pool?