Building new tank Questions

[tchndie]

Hello every body!! I building a new tank 84x30x26 (LxWxH) and was thinking of going closed looped and was wondering where should I get the close looped holes drilled, What size, Wear, and how many??? All input would be greatly appreciated!!
Thanks
Brad

Please help!!!!

 

[SeanT]

You really haven't given enough info quite yet.
Are you going to run a BB or DSB?

 

[tchndie]

1 inch or 2 inch sand bed

 

[Hal]

Have you ruled out using powerheads (maxi-jet mods, Koralia, Vortech's)? Some people say they're lower maintenance and cost comparable.