AboutJonathan Cauble Expertise I can answer all questions relating to outdoor water gardens. Anything from fish & plant health, water chemistry, and pond construction to equipment recommendations.
Experience I worked in a water garden specialty store for three years as assistant manager. I am also founder and president of Aquatech, LLC Aquarium Services of Virginia. I have personally troubleshooted over 100 ponds and countless aquariums.
Question How do I clean the green algae which is growing around the huge quantities of pebbles in the fish pond?
Answer You can do 1 of 2 solutions:
1) Physically remove all of the rocks and scrub them all by hand. In this same sense, you could drain your pond and use a pressure-washer to clean them.
2) You need to do a whole lot research on the food sources of algae. Then, test your pond water for all of the nutrients that algae could be using to grow. Then, figure out a customized plan that will safely rid your pond water of excess nutrients.
Both ways could be a huge pain. The easiest, but not always most quickly effective, way is to add shade-providing plants to your pond. They not only block out the sun, they also use nutrients that algae would otherwise use to grow.
