Not sure alittle short on money at the moment, waiting for work to start up for the season. I have thought of it something with smaller holes than the bio balls. I have seen people say you can use lava rock also which would be reasonable, just not sure whats safe and not. My lfs don't stock much other than the normal stuff, they'll take my clippings but don't carry much stuff I want and don't want to order anything they keep telling me it'll be faster if I order it myself. Oh well probably be cheaper if I just order stuff on line. ritght now I'm tring to figure out what I want to stock the tank with as there are 2 fish and a couple shrimp in it at the moment. The best opsions in town are matrix and fluvals bio rings. Some day in the future i'll have to pick up some and start adding it into the rena xp4 slowly.
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