I've been working on the plumbing for the pond, it's almost done. The biggest problem I've had, is I didn't allow enough room in the equipment "bunker" I should have built it bigger. It's been a really tight squeeze and it hasn't allowed me to do all I wanted.
Here you can see the two bottom drains going into the filter. I had to compromise as I had no space for flush out branches where I wanted them. The ball valves are quite deep, so I made some handles to make it easier to open and close them.
At the top left is the inlet from the intake bay, this goes into a freshly cut third inlet into the filter.
The blue pipe is the water level topup, I just need to tidy up the pipes.
I've used the two outlets on the filter, one goes to smaller for the two return jets for the pond, the second larger pump feeds the bog.
I've put a branch after the main pump so I can use it for flush outs, I can divert the water to a sewer. So for a flush out of a bottom drain, I can close valve on one BD, close the valve into bog and open the divert. Not ideally as the crap will have to get caught be the drum filter.
So I'm nearly ready to start testing it all out, I just need to do few electric items and it will be ready to go.
Oh yes, the other problem, getting into it, it's very difficult
, I'm doing to build a type of hinge decking hatches over the "bunker" that I can open and lay on to get to bits....I hope