Hello Everyone, I decided that this looks like a nice forum to join and decided to post a few things I have learned about my pond. I live in Germany and have a 6000 liter / 1500 gal goldfish pond I made from rocks I removed from our driveway. I built the pond over a year ago and have fought with algae problems using chemical solutions, barley pellets and even active charcoal. I have added several aquatic plants that are growing fast and reducing sunlight needed for algae to grow. One day my nephew was helping me rearrange the plants I had in the pond and after entering the pond I noticed a small oily film on the water. I immediately had him get out of the pond and discovered that he had sun tan lotion on his legs. I was afraid that my gold fish might die but the next day my algae pond water was crystal clear. I have continued to experiment with adding just a little (3 drops) of sun tan lotion when the pond starts to get dirty and gets crystal clear again. I tried this experiment on my father-in-law pond and his pond cleared up as well, except it might of been fatal to his toad that was living in his pond. I was just wondering if anyone else had any cheap, safe home remedies to help with their ponds. I look forward to learning from this forum and good discussions. Thanks John