Hey Zanski,
No problem glad that you found it useful. I have drilled a fair amount of tanks (I am no Pro but it isnt really difficult).
Not sure if I even have all of my diamond coated hole saws anymore. I have let lots of people borrow them and I dont think that I have my full set anymore.
okay kev thanks! And I really didnt have a choice... My 26 started leaking. And may be cracked not sure if it was the hob skimmer or what. I'll no soon