Hi Phil 👋🏼 you have everything all mapped out, possibly more thinking than really needed but "do it once do it right" 😀
I have watched all through your build and its impressive 👏🏼
I installed the same skimmer as you on our pond but used  4" pipework instead of 2" as its a gravity feed the larger diameter pipework is much better for flowrate. The pond side pipework is not glued so only friction fit as its not necessary.
I also put a valve to adjust the flow to suit our requirements.
The main reason was to add extra water flow through the drum to the bakki shower. (You still have time to core drill a 4" hole through the pond wall).

The other thing is pond returns, how many and where. I have found its not really necessary to have returns in all corners and to prove this to myself i only have two and they are one above the other in one corner creating flow that achieves everything you need to remove all waste. The shower is a 4" underwater return about 6" below the waters surface and directly below that is a 2" pumped return from the moving bed chamber.
I'm looking forward to seeing the progress Phil 👍🏼

Great looking set up. Love the attention to detail and really looking forward to the fibreglassing

Really good progress looking good. Some good clear info to and I will use the numbers on pipe with my fitting sure will save a lot of messing around 👍👍

Subscribed mentioned on derby koi.  Bizley the dog sent me 🐾

Looking really good buddy,  very impressive build that will be. Take care and stay safe.

Really coming on now. Looks amazing.

Nice and tidy Phil, the finish post is in sight 👍

Great video - I would recommend an in-wall skimmer, then run this gravity fed on 3” or 4” pipe to the drum - I run this system and it’s great. If you plan to run the in-pond skimmer gravity fed to the drum I’d be concerned that there wouldn’t be enough gravity flow given the drop in pipe size - most of the gravity pull would go to the bottom drain. My other recommendation would be an electronic in-line flow meter for your return - expensive, but takes away all of the guessing on turnover/flow rates. All the best!

Nice job mate

Nice one mate love you planning with the pipes and drawings 👌 not long now soon be fill day 🙂👍

Mate
You sir are a wizard 👍👍
Looks amazing

Amazing work, looks fantastic. I would go with an in-wall skimmer though, looks neater and one thing less for fish to knock themselves on. I speak from experience of both (in-pond and in-wall) the in-wall looked and performed loads better.
Will be an amazing pond when done!!

Nice one  Phil. I like neat and simple pipework. I did the same as you, things were numbered on the pipes and I had a drawing 👍😊

Nice and neat 👍👍👍

looking good new subscriber

Followed a link from andy at derby koi  I see you've reached your 1k, congratulations. Looking forward to watching your build

Great progress fella. Not a fan of in pond skimmers, wall skimmers for me but understand your concerns and logic.

Hi please, can you provide a link for the fixed floating skimmer. Many thanks.

What’s that skimmer called ??

Boom 💥 looking good mate, really getting somewhere now fast!!!! Looking forward to seeing the fibreglass done. Also I really like them skimmers 🤙