So with the minimal help of Eric and Barry *cough, cough*
Here some pics how I tied my 90 in to my emergency frag tank 40B
RESULT
https://lh5.googleusercontent.com/_Ev5HYy-hgao/TaOhzrK3SlI/AAAAAAAAEL8/ozgV0l4bfh8/IMG_0374.JPG" alt="" />
[IMG]https://picasaweb.google.com/Robin.Finke/FishroomConversion?authkey=Gv1sRgCP2Zx_z3yN2NDQ#">https://picasaweb.google.com/Robin.Finke/FishroomConversion?authkey=Gv1sRgCP2Zx_z3yN2NDQ#</a>
Here some pics how I tied my 90 in to my emergency frag tank 40B
RESULT
https://lh5.googleusercontent.com/_Ev5HYy-hgao/TaOhzrK3SlI/AAAAAAAAEL8/ozgV0l4bfh8/IMG_0374.JPG" alt="" />
[IMG]https://picasaweb.google.com/Robin.Finke/FishroomConversion?authkey=Gv1sRgCP2Zx_z3yN2NDQ#">https://picasaweb.google.com/Robin.Finke/FishroomConversion?authkey=Gv1sRgCP2Zx_z3yN2NDQ#</a>