Or strange pump noises revisited...
every 4~5minuettes I get a sort of squiissshhh noise, I found out it's cavitation,(by squeezing the pump inlet closed), why would the pump(1250Ehiem) cavitate periodicaly?...
It stop[ed doing this for a while when I was leak testing out of the case, now it's doing it again, there's no air in the system that I know of, I've banged and tilted the rad and no bubbles are to be seen. even when it cavitates, though you can hear it going through the block if you're close enough...
I live in a house that creaks, bangs and groans(in time with my stomache
) but surely my pump can't be haunted already!!
...