bitter basil??? Help

[rootspook]

I have an ebb and flow system growing sweet basil started from seeds. The plants are producing wonderfully but the basil taste is off, bitter and much different from other basil I have grown in soil. I’m using the GH flora nutrients with a pH around 6 and an EC of 1.0. The plants have not flowered and the young and old plants taste the same. It is HOT where I grow and I’m outdoors. One guy mentioned I need to flush the plants for 1-2 weeks with plain water to get the nutrient taste out. I would like to avoid this if possible as I want a continuous supply of basil. Any ideas or similar problems???? Thanks