In my experience, plants grow faster in a warm dry environment. The warmth and lack of moisture in the aor cause the plants to take up more nutrients and water which will equate too a fadter growing plant. Southern ag garden friendly fungicide is super concentrated liquid that is 98.85% Bacillus amyloliquefaciens strain D747, and great white is a powder that contians high doses of mycorrhizal fungi. You can either add them both to your reservoir straight from their containers, or you can conserve it by brewing a microbe tea. I personally brew the tea by getting a 4 gallon bucket, fill it half way with water, add 1/3 cup of molasses, 2tsp of both the great white and southern ag, throw in an airstone to keep the oxygen levels up and to help the bacterial breeding process, and then i wait 12 hrs before adding the whole brew into my reservoir