I have had a 12g reef for 5 yrs and it is time. The new setup is a 30 with 15g sump but im stumped when i got to the Question To Drill or not to drill. are there advantages to either? if i drill where can i do it? which is safer? or do people do both for safety? as you can see i am lost here and could use some help this is my first sump and i understand mostly how it works but haven't set up in person yet. Also I am new to RC and just learned about FVRC. any help would be greatly appreciated thankx Podhead