I have just recently come back to the hobby after a couple of years away. I got a good deal on a 90 gallon tank and stand, with about 180 pounds of live rock....I have had the system running for around 2 months now and am trying to decide whether to let the guy at the LFS drill the tank or not....He swears he does them all the time and that it will not cause any problems with the strength of the tank, but I have had alot of people tell me different. My first post, and I look forward to this forum and any input would be appreciated.