Since you're going with such slow-growing plants, I don't think you'll need to dose Excel daily.
I suspect you'll need it occasionally since your lighting is a bit higher than what your plant choices will need, but I think weekly will probably do it.
You do need to plan for large weekly water changes based on your bioload, and if that goldfish is a comet-type you need to plan a pond upgrade for it sooner rather than later... those guys can grow up to 18-24".
I suspect you'll need it occasionally since your lighting is a bit higher than what your plant choices will need, but I think weekly will probably do it.
You do need to plan for large weekly water changes based on your bioload, and if that goldfish is a comet-type you need to plan a pond upgrade for it sooner rather than later... those guys can grow up to 18-24".