Alrighty haha so here's the more in-depth update on the tank! Needless to say the UV has started working it's magic but it's going to be a few days before I get any real clarity in the water due to the sheer volume of bloom! I ended up getting a 36w steriliser and I've got it T'd off the return line being feed by the return pump which seems to be working well. I haven't done any flow measurements yet though haha.
For the moment everything is mounted and set up in a semi-temporary fashion as you can see but it's working well.
(and yes I know it's not a great idea having run around the power board but it's what happens when you haven't got much space haha I've thoroughly leak tested though)
In terms of the difference it's making, it's been great so far! In less than a day it's taken all the yellowing out of the water and it's a lot clearer already (pics don't show that as well though) but here's a before and 24hrs in!
We've still got a long path the travel but it's improving so I'm more than happy
Maybe a little longer haha it's pretty bad as you can see but it's definitely working!
Heya Perry

I've been skimming wet, running plenty of carbon and dosing some beneficial bacteria but that was having no impact due to the sheer volume so it was time I brought in the big guns haha
Not sure if I'll continue it or not, once I've got it cleared up and I don't have to worry about the bloom I'm going to put some thought into whether I do or not