a few are drilled by the manufacturer.some are drilled by my friend.the rest have overflows.
one of the 90gallons is acrylic and is divided into 5 sections.that 90 is 72inches long , 24 wide , 12 inches tall.a series of sumps are connected.a couple of big pumps.and thats it.next week im down sizing thought.i have a lot of empty ones and a couple of my friends are buying some.the big 250 is going all the 20s are and a couple others. about six tanks are empty.it fun but there is some overkill here and there.i have two sheds there all in and i want to cut down to one before the end of the summer.its also very