Start with the system basics

When every plant is affected at once, it is usually a system issue rather than a plant issue. Run through the basics first.

Steps to resolve

  1. Check your timer is set correctly for your environment, especially outdoors where temperatures shift
  2. Press the pump test button on your timer, remove the lid, and confirm water is flowing from the top all the way down, if not check for clogs or disconnected pipes
  3. Check your nutrient dose, too little or too much can affect every plant at once
  4. If all three check out and your plants are still struggling, it is time for a full water change