Plumbing completed on the sump, ready to go in:
And the sump in place:
Yet another tank nightmare, and another chance to get the floor wet!
So back when I specified the tank, I wanted it drilled for 21.5mm tank connectors. Reason being these are cheap (£3 for a pack of 5 from Screwfix!), on the inside you can use standard overflow pipe, and on the outside it has a standard sized "tap" thread, so a cheap tap connector can fix on the outside allowing you to run standard 15mm/22mm pipework on the outside. Perfect, cheap, available at big DIY shops.... easy!
Tank, much to my annoyance was drilled for 32mm pipework, and these connectors have been causing me nothing but grief since. Tank same supplied with connectors similar to this:
No use at all, as the piece on the threaded end is not compatible sized with anything... it's about 30mm. Their solution was to fudge/mod a connector to fit in this gap. Needless to say, never worked properly. Turns out these big connectors are made from Polypropylene, which is a extremely difficult plastic to bond. I filled down a connector, and tried to solvent weld it. Second time, I tried silicone. Both held to an extent, but both following a knock simply fell out.
If you ever wondered what the flow rate of a 32mm hole in the bottom of a 450l tank is.... the answer is wet!
So, I still need to sort the pipework out for the sump properly, and I've now had to improvise a solution to hold the return pipe in place. Leaks a little, but seems to be OK for the moment.