Been doing saltwater fish & inverts for many years. Wanting to up the interest in reefing. After moving & having our tank sit a couple years it up & running again. Just picked up a 120 with sump & this will be my first attempt using a sump. It came with overflows. But they are not installed. Do I need to silicon the m in? Are they needed? Tank is drilled & has the bulkheads & intake & return lines.
Thanks again for the add & help,
Dale
Thanks again for the add & help,
Dale




