Hello fellow reefers. I'm getting irritated with the brown algae in my 120g DT. Been combating this for quite sometimes at least 3 month now and no improvement. I'm using dual reactor, have refugium, only feeding once a day, MP40w ES, Hydro korilla (1350GPH) . So all possible prevention have made, yet no improvement, 20% WC, have different kinds of snail, particularly cerith, conch, nassarius, I'm using VEGA color and reduce it 60% for 6 hrs. Parameter are close on the dot: NO3- .25, PO- 0, PH 8.2, CAL: 430, ALK: 9, MAG-1380, SAL-1027, TEMP-78.5. I could think of any that may cause this issue. DT been set up for over a year now. I have a little bit of everything (SPS, LPS, softies), yellow tang, poweder tang, salfin tang, Naso blonde, true percula.
Million thanks in advance.