It must be Spring - I'm posting to TFP! I usually embarass myself with dumb Qs, so here goes! All these questions tie together but there are too many of them. The one I want to ask is at the bottom.
My main Hayward 1.0HP pump is not cascading water adequately out of the raised hot tub down to the pool. This has been gradual since the end of last season. It seems unaffected by cleaning of my 4 cartridge Hayward filter. That valve on the top of this filter housing has NEVER gone up in response to dirty filter. But for what it's worth it is 18.
The housing does not leak, the basket housing is full of water without bubbles (I have never been able to get this chamber full of water before replacing lid. Am I supposed to? After lid is on air goes away. That's self priming right?
The pump does not make any different noise.
My nemesis since pool installed 6 yrs ago => the decomposing natural slate my wife chose for walls above waterline. SAND, sheets of SHALE. The vacuum has picked this up well but I have had to suction with tubing attached to skimmer outlet (as described on TFP).
Other than more frequent cartridge cleaning and being harder to maintain a neutral pH ( I assume this is what slate does, alkalinizes the water. slate = clay = high pH in soils anyway).
The kid at the pool store said maybe the housing has leaf debris in it or that the constant sand has worn down impeller blades(esp with manual cleaning).
Is there any reason to tear this pump apart?
Is 6 yrs old nearing life span?
May be it is time for a 2 speed anyway? THis is the cat's a** now?