Drilling tanks is easy peezy. Use nice good bit, brs and glass-holes.com sell them. Start slow, and use lots of water to keep it cool let the weight of the drill do the work and just control the drill speed. I also have started using no baffle sumps. And been liking it lol but all I have in mine is skimmer and live rock. I'm using algae scrubber as algae filtration.