How can I prevent green mold in my roots and pots? I use 1 quart to 2 1/2 plastic quart containers. I have a good management at minimizing this, except for Midwest Summers. I use Fox farms, General Organics CalMag and Armor Si at normal dose. Plus molasses on watering days. Ocean Forest soil. Should I use a better Silica?
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I know exactly what your problem is 😕 ... What you're referring to as "green mold" is actually algae. Wet media + light causes algae to grow just as you show. The problem is you are using white containers and light is going through the containers - therefore allowing the algae to grow. Never use clear or white containers like that. I think most people use black containers or brown containers. Once you switch containers you should be good 🙂