I have a question about starting a sump/refugium. I have an existing 10 gallon, with an existing hang on aquaclear 110 working as mech filter and small refugium. I want to drill a new 10 gallon, add an overflow from glass holes.com, and move the contents from this aquarium to the drilled tank with an overflow. Then use this existing 10 gallon as a sump/refugium. My question is about introducing all the new fresh saltwater from the sump/refugium to the display tank...do I just mix and heat the new saltwater as close as I can get to the existing display tanks salinity and ph, turn on the pump and let her rip...or what? Thanks for all the advice!