I use the creature keepers by lees. They hang on my sump and I run a drip line with a valve on it. Start the siphon and adjust the valve to your prefered drops per second. I keep the base of the container underwater and it keeps the temp stable. When the water level in the container gets up to the top I pour off 1/2 of the water. See pic below.
Here's to swimmin with bowlegged women.
Reef with 30G Sump/Fuge Combo
-30G LTAnemonarium with mated porcelain crabs, 10 sexy shrimp, and 2 pink skunks all tied into the other 135G in my system.