Hee hee! I just noticed this...took me a minute to understand, but I like it!
K Kaba wrote:Goldfish can be ferocious plant destroyers, they love to dig and nibble. They really require a lot of water per fish (more than tropicals of the same size) for best health.
For both plant protection and goldfish health, have you considered an aquarium sump tank? It's basically a second tank piped up to share water with your display tank, but out of sight. Your display tank may be 40 gallons, but when set up right, your fish are chemically in an environment that's display + sump gallons. And if your fish are rough on the plants, you can move some or all of them to the sump where they can grow in peace. Or grow unprotected plants like duckweed. Fish may find activity like water tests to be less stressful when you're using the sump instead of "their" tank.