somp and overflow box

[dick]

Hi experts,

Pls, I plan to tailor make a sump and buy a overflow box for my exist tank (120L).

But due to the limitation of the space and design of mine imported cabinet and in order to fit to install the overflow box's tube that going from the overflow box outlet directly to the sump (rear of the cabinet is divided into two pieces that being spaced out 3" apart only), moreover as possible as the sump bigger, I need to the sump measurement as strangely as the formal. The first and last chambers height is multiple shorter than the second and third chambers. The shape look like it ¥Y.:(

Therefore, I kindly ask for some professional opinion in there any problem caused by such strange design/measurement.
Will it functional and smoothly working?

By the way, I want to buy a CPR overflow box, but I don't have any right idea for which type of tube (Elastic and band or Formal PVC tube) should be used? Especially for mine such case?

Pls any experts can help me:confused: I just arrive in this forum from very far away from Hong Kong where nobody can get me good reply:(

[Bamm Bamm]

Call Jeff at http://www.lifereef.com and he can build you a sump and a overflow for your setup and you will ghave the best that money can buy...Cpr overflows are IMO garbage they will definately cause youto have an overflow in your house..Lifereef's prodct's are top notch heres another link for a company that can sustom make you a sump and a overflow..They just got done building my new overflow for me for $40 less than lifereef...Plus there are reef enthusist...Heres there link..
https://secure2.easyspace.com/www.reefland.com/shopping/

Dan