The tank is a 20long that has been set up for about 4 months, but is actually running inline with a 125g SPS reef with a 50g refugium that has been up for about a year. I guess it is more like an isolated refugium sorta thing if that makes sense. The maroon clown (about 2-3") has lived in there since setup pretty much.
Checked tests on Saturday and nitrates, nitrites, and ammonia were all 0. My pH kit wasn't playing nice, so I'm not sure of the pH at this exact moment, but it's been stable for a long while and I have no reason to believe that's changed.
Temperature is kept at 79F by a chiller.
Salinity is 1.026.
As I said, in the 20long is just the maroon clown and a candy coral.
150W halide over the 20long.
To acclimate him I drained the bag to about 50% and added a "shots" of tank water from a turkey baster over the next hour with an additional bag draining at 30mins. Not quite a drip mechanism, but close.
I figured that the anemone was coming from your 400W system and wouldn't need acclimation to a single 150W. I also assumed that if he didn't like the bright light, there were rocks for him to hide under at the sides (which are darker than the center too since the single "pendent" doesn't fully reach the 30" length).
He looks REALLY bad right now, almost inverted.