We used a biowheel (400) and a skimmer on our 46g for over 2 yrs; with 5-6 fish at all times, our nitrates stayed below 20 ppm. We also used the biowheel-style filter on our fw tank before converting it to sw, and we didn't have to do water changes more than once every 2-3 months. I think it's all what works for you & your tank.
...removed the Bio wheel. Left the filter on for extra flow. Tested today and things seem to be moving in the right direction. Just the Live Rock and Sand still.
Nitrite - .2
Ammonia - .15
Nitrates - 20
Alk - 2.4
Ph - 8.0 (little low?)
Spec Grav - 1.024
temp - 78.5
Also looking at a Skimmer and Sump/Refug. Thing is I don't have much room for a sump.
So should I look at a HOB skimmer and use a 10 gal for a refuge underneath the tank. Ive tried so many ways to divide the 10 gal to incorporate the skimmer but it just seems too small.
Anyone think it's possible to make a 10 gal with 3 areas, 1 for skimmer, 1 for refugium, and the return. If not I'm OK with the HOB skimmer. Should I even do a Sump/refuge for a 30 gal?
So I added my live rock on Jan. 22 and all seems good. Had a question though. Decided to do a test today and here's what i got:
Ammonia .15
Nitrite 0 (?)
Nitrate 25
PH 8.2
Alk Normal
Temp 77.8
So can you still have Ammonia without Nitrites? Nothing in the tank but the Live rock and a few powerheads for movement. Maybe it misread the Nitrite test. I'll test again tomorrow but I thought Ammonia would got to 0 before Nitrites.