are sump bio ball filters a bad idea?

[gerry45]

want to add a sump with overflow box to my 3 week old 75 gallon reef tank,

are bio balls in sump(trickle filter i think) a good idea or is my rena xp3 canister better?

if so,I could try just using a 20 gallon aquarium and put in baffles for bubbles.

what size pump is good to return water up 3 or 4 feet to main tank?

one more question,how do you anchor the return line in display tank?

thanks all!

[mysis]

Bio balls suck, all they do is produce Nitrates, if you want anything for media, it would be better to used crushed coral.