|MadSci Network: Botany|
Dear Atul, First, let me say that I do not recommend that you add any chemicals to your filtration system. You must contact the manufacturer of the system for help. I can tell you this though. Algae require light to grow. If the algae are growing in your filter, they must be getting light. You may be able to decrease growth of the algae by blocking light. I have used filters that are contained in clear plastic tubes. This type of filter holder can be wrapped in black plastic to cut down light to the filter. Then the black plastic can be removed for inspection. Please note that if your "algae" are still there after a few days or weeks in the dark, you may not have algae, but a fungus or bacterial contaminant. If this filter and pipeline are used for drinking water, you probably don't want to add any chemical without consulting an expert. Your pipes can be flushed with a WEAK (less than 5%) bleach solution to clean them out, kill algae and bacteria growing there. You must rinse thoroughly. Then you can use another method such as black plastic to keep the algae growth under control. You will still have to clean your filters, they will continue to become clogged by particles. Hopefully, you will need to clean them less often.
Try the links in the MadSci Library for more information on Botany.