In the process of building a new 350 acrylic reef tank. I was considering having a dedicated "drain line" drilled into the back ..basically a bulkhead with strainer, fed to gate valve, which is then fed directly to drain sink. The idea here would be an extremely easy way to execute 55 gallon water change. Open Valve, drain to specified level, shut valve. Then, open valve on mixing station salt water to refill. Is this advisable ? I love the idea of no hoses needed weekly water change.