Please help with filter install
I bought a 72 gallon bow front saltwater fish tank about 5 months ago. It is reef ready, however the person I bought it from had a cascade canister filter hooked up to the bulkheads. It is also running a fluval fx5 filter. I would like to replace both of these filters with a sump. I bought a sump but I am wondering if I can hook this up with the water in the tank. Will the water spill out through the bulkheads when I attempt this? Please let me know. I am new to reef ready tanks and do not know much about how to change things. I have 6 african cichlid tanks but no sumpp filters. This will be my first attempt.
Please let me know...