, I use ceramic rings in my canister.
seems to greatly prefer the live rock approach. The rings or balls will accumulate gunk and turn into nitrate producing machines. Not as much a problem with FW
, and SW
critters are more sensitive. Aerobic bacteria (oxygen using) convert ammonia to nitrite to nitrate, anerobic bacteria (no oxygen) convert nitrate to other stuff.
You only grow the aerobic forms on the ceramic/bio balls, whereas with LR
you get a little of both (anerobic would be deep within the rock with very little water flow). Deep sand beds also harbor these bacteria.
55g reef, 2x250W 10k MH
+ 2x96W PC
actninc, 10g sump, AquaC Urchin skimmer, 65lbs LR
xenia, mushrooms, wels. open brain, fungia radiata (orange), green eyed zoos
flame angel, mated pair of false perc, 6-line, firefish
20gH electric yellow cichlid