- Location
- Ozone Park, Queens
i have been noticing cyano poping up on my back wall and a few spots on rocks.. not sure why.. i do weekly water changes using ro water. tds is always at 0. and i check my phos and it is currently .00 using hanna meter. i have a mp10 in my nano so i dont see much dead spots in my tanks.. what should i do to get rid of it. scared it will spread



