420 Magazine Background


  1. S

    Keep your hydroponic water under 70F/20C to limit Legionella bacteria growth

    Hi -- I know this is a little off-topic, but regarding Legionnaire's Disease, this is just a reminder to hydroponics growers that Legionella bacteria love to grow in warm water (above about 70F or 20C), so in the interest of good hygiene and safety, try to keep your water temps below that...