If you want to spend the money then go for it! I would still get rid of the Bio-Balls...I don't care what the LFS
says they aren't as good as the LR
rubble...believe me Mother nature knew what she was doing...Man created those bio-balls remember? The second link you posted is basically what we were talking about...most of them are "kits" no tank included there..you have to buy the tank seperately!
Either way...I would not use the bioballs....