Hydro Logic BIGboy ChloraShield Carbon Filter (HL22018)Protect your roots! Many cities are switching to chloramines as their primary method of disinfection. Chloramines are most commonly formed when ammonia is added to chlorine to treat drinking water, making it harder to remove. While our Green Coconut Carbon filters work great for chlorine, the smaller molecule size of chloramines requires additional filtration to ensure your root supporting microbes are happy and healthy. These new filters ensure full