PLEASE don't turn this into the UV debate I have just read on another thread it did nothing but confuse me!
We have a 190L tank which is going through a very 'brown' phase.
We have a skimmer and a canister filter running.
The fish/corals seem happy and all of the 'tests' come out fine.
Will a UV fix the 'brown' (Sorry I have tried taking pics but it just turns out a blur) The coral is turning brown and the sand has a brown layer.
This particular tank has been running about 8 months.
So the BIG question .....
Will a UV fix the brown??