Very nice. Everything seems to be liking that ATI Sunpower fixture.
The ATI has done wonders as well as dosing:
1ml KZ Pohls Extra twice a week
1 drop KZ Coral Vitalizer every other day
1.5ml KZ Coral Snow twice a week
2 drops KZ Potassium Iodide twice a week
Also looking at swapping out 2 of the pumps and replacing them with a Vortech MP20.
I have a fair bit of bubble algae but to be honest I don't mind it and it doesn't look that bad in flesh.