HI! I'm Margaret, I'm new, and I need advice from experienced water gardeners. I have a back porch that is badly in need of cleaning. It has mildew on the ceiling, and I'd like to find or make a cleaning solution that would take that off. The problem: my koi pond is about 6' away. The porch has a cathedral ceiling, and the easiest way to clean it would be a pressure washer. Some of the spray will certainly get in the pond. It would be a very small amount, as we plan to be very careful to aim the spray back toward the house, but I need to be sure I won't poison my fish. Some of them have been there for years.
I know there are so-called "green" cleaners that are supposed to be harmless to children and pets, but that doesn't mean they don't contain things that might harm fish. I am thinking of using a solution of baking soda and water, or a solution of vinegar and water. I'm not sure either of these will take off all the mildew. Is there any commercial product that might be safe to use and also do a good job of cleaning?
I googled this problem, and the only thing I got was how to clean my pond, or how to clean my porch, but nothing about cleaning something NEAR a pond! I'd appreciate any advice you might give.
I know there are so-called "green" cleaners that are supposed to be harmless to children and pets, but that doesn't mean they don't contain things that might harm fish. I am thinking of using a solution of baking soda and water, or a solution of vinegar and water. I'm not sure either of these will take off all the mildew. Is there any commercial product that might be safe to use and also do a good job of cleaning?
I googled this problem, and the only thing I got was how to clean my pond, or how to clean my porch, but nothing about cleaning something NEAR a pond! I'd appreciate any advice you might give.