americanlover2 Posted December 20, 2011 Report Share Posted December 20, 2011 hi all, just wondering is scoria any good to use as media in sumps ????????????????? thx................paul Link to comment Share on other sites More sharing options...
FIIK Posted December 20, 2011 Report Share Posted December 20, 2011 its perfect, have it in all my sumps !! Just make sure you bag it so its easy to remove and clean, can become quite a nitrate factory if not cleaned every now and then. Link to comment Share on other sites More sharing options...
DeadFishFloating Posted December 20, 2011 Report Share Posted December 20, 2011 best for large filters like for ponds long term its not the best surface area to volume ratio so if you only have a tiny area for bio filtration........ go matrix over scoria but if ya gotta fill a wheely bin lol scoria is awesome Link to comment Share on other sites More sharing options...
