So I purchased a strong pump that took a 1.5 ID hose. I took a look at the hose and thought it was so wide! I decided to test draining the tank with just the hose and wow, it took 2-3 minutes to drain 20% of a 240. Needless to say, I'm returning the pump and keeping the hose.
Also, luckily, the hose fits snuggly into the circular cut out on top of my acrylic tank, so don't need to worry about propping it down.
Also, luckily, the hose fits snuggly into the circular cut out on top of my acrylic tank, so don't need to worry about propping it down.