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I've also now added thread tape to the pump drain ports, and tried shaving cream on all the suction side fittings in the pool box with no luck. The plumber (who came for something else) couldnt test it, so now I have to see if a leak detection specialist can work it out on tuesday. There are...

Do you think theres any benefit to adding the non return valve as per the pool shops suggestion?

I've got 2 shutoff valves in the return flow. One outlet was for a pressure cleaner (I think?) and is a much smaller diameter outlet port with a thread in it. The other seemed to be a normal 40mm diameter to two outlet jets. I've run with each one off with the other on, I guess I could try the...

Hi, thanks for your response. Yes I did the plumbing, I've done pools before with no issues, however I did check every fitting as best as I could with clingwrap in case I made a mistake on one allowing air in. I've had the water level up almost to the top of the skimmer inlet to reduce the...

My old filter and MPV gave up the ghost, so I replumbed the pool, removing the booster pump that never got used, and upgraded to a glass based 28in filter (rather than the old 31in sand filter that came with the house) with a new 1.5hp astral ctx400 pump The pool box is mostly below the water...

@kimkats What are you thinking is likely to have happened to the sand filter?

Theres no attachment in the outlet for a cleaner that I can see, just a regular PVC pipe outlet, and the cleaner that came with the pool was a suction cleaner which makes everything more confusing. I'm certainly a robot convert in general after switching from a baracuda style at my old place...

The lack of unions does point to lack of maintenance I guess. The booster is sort of inline with the main pump, except that it can also suck from an outlet (which makes no sense to me, as it could suck in debris) if it outflows the main pump or if the main pump is off. The line with a valve is...

We've just bought a new place, that came with a swamp green 11x5m pool. After some research I've worked out it came with - a poolrite s1800 filter box with broken basket - a seized main pump (Super II - 1.5 HP (SII411) | Hayward Pool Australia) - an old-ish hayward 715 filter with probably...

Sounds like a reasonable theory. I think the solar line does actually flow somewhat, but it might be under excessive pressure. I could feel the warmth in the return line after a while and the temp difference between that and the intake line. When I tried shutting the flow valve a little too...

Im not sure if the main pump is larger than the solar pump. Its certainly not a lot bigger. I'll see if I can read the wattage figures off them. The flow valve flap opens up fully when you initially turn the solar pump on (main pump already running). The flap then drops to look about 45 degrees...

No thoughts?

Hi again - thanks for the responses. The spam vetting wouldn't let me post the pic initially, hopefully this works. Its possible that theres some clogging as I had a bad stint with algae last year. The water seems pretty clear at the moment, and the main pump flows ok so if there is a flow...

Edit: Picture added in post below; Hi all, relative newcomer to pools here. As we're coming into summer I have just started checking out the solar segment of my pool setup (recently bought house). The secondary solar pump appears to leak a little after a while and the flow valve doesn't seem...