Howdy. I am a newbie to this forum but not completely to aquariums. Here is what I have: a 10 gallon black water aquarium with 2 cardinal tetras and 2 glow light tetras as well as Admiral Ackbar, my ghost shrimp. This tank has been set up for a year. I do 30-40% water changes every 2 weeks and change filter once a month. I use a black water additive and bio-boost for my bio-wheel filter every water change. In the past few months I have had crazy amounts of brown hairy Diatoms growing. What can I do to get this under control?