Hello form Greece
I'm running a 500lt (130g) with sump 200lt (52g) and ATS.
For ATS lighting i'm using 90W UFO Led Grow Lights - Seven Spectrum by PRAKASA.
The ats area is 43cm (17 in) x 25cm (9,8 in).
Lighting period 12 hours.
No skimmer but i'm using phos removal and carbon.
I'm not having algeas to main tank (thanks god)
I'm also using a small piece of red algea to sump growing by the same light.
After 6 months the algea at ats algea is stable and it is still brown to yellow color.
It might need more feeding ? ( i'm feeding three times a day flakes and every 4 days one frozen cube)
more or less lighting hours ?
Started photos