Yes to clarify - a protein skimmer is a good idea but reallly the only type
of "filter" you'd need. Just keep good water movement with some powerheads
and you should be good to go. I have a 20 gal tank (reef) set up with a
hang on protein skimmer, and 2 small powerheads, a 2-3" LSB and about 40 lbs
of live rock. It's a super healthy tank and everyone is happy. Also have a
125 reef with 2-3" LSB and about 150-200 lbs.(around 60% volume) live
rock - with a 30 gallon sump, protein skimmer in sump, 2 power heads and a
huge return pump. Tank is pre-drilled with built in overflows at the
corners -- again , everyone happy - no filters

Good luck!
"Richard Reynolds" wrote in message
news:Lu_cb.23469$gv5.12791@fed1read05...
Hey

is it right you can run a tank on just live rock as a filtration system
and
don't need any other kind of filters?

the protein skimmer should be a must on anyones list, but its not its not
all that hard to
go with out one.

LR and a DSB
thats all you need, you dont want extra bio filtration, and you dont
need(or really want)
mechanical filtration, it is however nice to have the option of adding
carbon or other
alternatives when needed.

Thx

--
Richard Reynolds