rayman45 said:just wet/dry people..
what is in your w/d
i have
bio balls
1 bag of bio max
2 bags of carbon
and im gunna get a few pounds of lava rock for my tank
You'd be better off using some other medium than crushed lava rock. A lot of people used it before bio-balls were invented but, lava rock made water too acid. We used clay flowerpot shards to keep a neutral pH. I had one wet-dry sump filled with those green plastic army soldiers we used to get for like a buck for a 100 count. Lots of good surface areas available with very few stagnation points. I still have sumps running on toys as a gag in my waiting room tanks. Toy army soldiers, barrel-o-monkeys, and gag fake teeth. These sumps are slightly oversized for the tanks they're running on since there isn't as much surface area on these toys as there is on proper biomedia.