I have a 200 gallon outdoor pond above ground that I’ve had for three years now I’ve been OK with the pond as far as just cleaning up myself without a pond filter or a pond pump. I’m wondering because I have a lot of algae problems and plans aren’t growing as good as they should be growing if I should have a pump and a filter. I just bought two pumps for it, but do I really need a filter if I’m using Floaters and other plants that help against algae as well as fish ?