Hi everyone. I have lots of hair algae in some on my betta tanks. Its been going on for awhile now. I've tried reducing light to around 6-8 hours and I've tried removing it several times during water changes. It just wont go away. Its over everything. The fish are even getting caught in it! Its growing all over the other live plants. No ferts are being used. I have low nitrate (around 5). What can I do to get rid of this hair algae? Its getting out of hand. Thank you.