Hey all, my outdoor pond has begun accumilating algae on the rocks. I live in Singapore, SouthEastAsia, and the temperature on a sunny day can reach up till 35 degrees celsius. Without using any chemicals is it possible to remove the algae without having to clean it off? The pond is about 2m by 1.5m. I've done research and learnt that Water Hyacinth can remove nitrates that the algae feed on. I've added 6 of these plants already but is the number to little to remove all the nitrates? Also, the Water Hyacinths cost quite a bit in Singapore, can my 6 reproduce asexually or whateverly? Can somebody explain how I can create more of these plants without buying them?
Thanks, help is greatly appreciated here.