Ok, I just read the deep clean instructions for sand filters and this is something I almost certainly need to do since my equipment is of unknown age and spotty maintenance history.
My question is, the instructions were written for a top mounted MPV but my filter has the side mounted MPV. There's a clear dome at the top of the filter I guess I'd remove that to stick the hose down in?
Rather than just letting the water overflow could I set my side MPV to rinse/waste/backwash as long as all other valves are closed there shouldn't be any flow back into the pool in these settings right?
Great writeup btw!