So I couldn't help myself last night, I decided to play round with the rocks and change things around (wish I hadn't, it looked better the first time!)
Anyways, stirred up ALOT of crap, water went bit cloudy etc. I assumed it would've triggered an increase in something (Amm, NO2 or NO3) but after I left it an hour and tested, there was 0 NH4, 0.01 NO2 and 2.5 NO3 (Less than day before!). Does this confirm that the rock is definatly doing its job?
Skimmer is collecting alot of crap too, haven't seen anything like it since I've had it. Mind you, the tank has never really had anything in it until Saturday. Glad I forked out for the MCE600 rather than getting the MCE300!