| Steve, I have a meter that I use on the hose to get the actual gallons of the pond. I have my pond set up on a semi-flow through. I wanted to add a meter on the outgoing waste pipe so I can judge how much water I'm changing out a day. Just by using a gallon container and a stop watch, I'm guessing it's somewhere around 200 gallons a day but I know that's not accurate. |