I'm using RODI water through my Aqua FX Baracuda:
http://www.aquariumwaterfilters.com/...category_id=12
I am also using a TLF 150 reactor with bio pellets.
I don't feed to often, every couple days.
I am bad about water changes but have done a few this week already.
I do have a ball of cheato in there that has not really grown in size in the 4 weeks it was in there.
Bioload in a RSM250 is:
2 bangaii cards
2 perc clowns
1 6 line wrasse
1 foxface