Seeing as I appear to have a few more visitors recently I will do a bit of an update as the tank is 30 months in now.
As have most people there have been downs as well as ups!
I am very lazy but I do react to changes if I need to.
I designed the tank to be divided into 2 parts, the dimensions are 1650 x 650 x 450 mm, about 500 litres overall and it runs 550 water volume including sump.
There is a full glass divide at 1000 mm with a 75 mm swim through hole so the fish and creatures can move between the 2 sides.
Each side has it's own weir with 2 drains and a return in each weir.
I run a Nyos 160 skimmer a 300 watt heater and 2 return pumps, a Vectra m1 through a spraybar for the display and an Eheim 3000 for the cube end.
There is an RW 15 and RW 4 in the display and Tunze something in the cube.
There is a large fuge section in the sump and the cube is run as a display fuge.
I don't do water changes because I don't see the point.
(I intervene if there is a chance that my animals might be suffering, an extended power cut 6 months ago was treated with about a 300 litre water change over about a week.)
I top up RO twice a day by hand, about 8 litres a day and dose Reeflowers liquid kh buffer every morning and their All Elements when I remember in the evening.
I run Sochting oxydators, there are thread on them!

I have 3 tray of mineral mud in the sump and some siporax, considering removing them, long story!
My macro is mostly caulerpa, the naughty one, the tangs keep on top of bits in the display.
I have a 12 x 12 inch (I know I swapped from metric, deal with it!

). ... sheet of egg crate in the display refugium that is how I gauge nutrient levels, if my levels are low I harvest from there.
Don't think I missed anything!
The pics are from the past month or so, I will try to get a display fts this weekend.
Display fuge today.
DSC_0005 by
sshipuk, on Flickr
Full fts!
DSC_0005 by
sshipuk, on Flickr
Older fts.
DSC_0006 by
sshipuk, on Flickr
A resident.
DSC_0005 by
sshipuk, on Flickr
A fish.
DSC_0006 by
sshipuk, on Flickr
A snail.
DSC00298 by
sshipuk, on Flickr