We run our pumps all the time but we also add water as needed and make adjustments to fountains in high winds and such. It’s a personal decision of how often to run it. Moving and oxygenated water is healthier water for fish and plants, and less desirable for mosquitoes
I’m a rookie too
we’re all at different points of learning as we go and it’s great to be able to share and troubleshoot with one another
have a great day!
Ps also watch the flow of your waterfall… sometimes a little can run off away from your pond and even if it’s just a small amount, over time it adds up!