75G Closed Loop Question

[weege1]

Hello,

I'm in the process of setting up a 75G AGA RR tank. I want to drill the back for a closed loop questions are...

1. How many holes can I put in the back of this tank before I start I may be harming the structural integrity of the tank?

2. What is the best way of doing this.
a. How many and what size holes for the intake?
b. How many and what size for the Returns.

As far a location and what not I have answers to this after doing research.

Any other info please feel free to drop a line...

TIA

[sarduci]

How big of a pump for the CLS?

[weege1]

This has not been decided since I first looking to see how many holes I can drill in the tank... Once I feel comfortable that I can put x amount of holes I will then move to the next stage and figure out what size pump I will need depending on the expected head loss...

[weege1]

Giving this a BUMP

Can anyone at least tell my what the MAX number of holes I can put in that back of this tank. This is the most important question as I can figure the rest on my own after doing research.