Clearex during flower

I was told to use Clearex during flower every two weeks for a hydroponic system. It will not only clean out the drip lines but also leaches any salts and build up on the root system. My question is do I need to add the clearex in conjuction with the nutrients at the proper ppm, or just the clearex with water alone? Thanks for any help.

They are only in the third week of flowering.

isnt clearex a flushing agent?

http://www.planetnatural.com/site/clearex.html

Clearex

A common cause of crop failure can be traced to the build up of nutrient salt deposits in soils or soilless grow media. High salt concentrations in the soil solution cause a shrinkage of plant cell protoplasm away from the cell wall as a result of osmosis. This condition, known as plasmolysis, can eventually lead to irreversible wilting.

Clearex is a scientifically formulated isotonic drench solution, which effectively binds with the excess nutrient salt and safely leaches it from the soil. Leaching with tap or deionized water can lead to hyptonic conditions which cause cell lycis with outflow of essential electrolytes and nutrients. This causes tissue damage leading to serious pathogen disorders such as bacterial and fungal infections. Clearex is isotonic, therefore, it creates a safe osmotic environment which allows plant cells to maintain an optimal turgor pressure during treatment.

Clearex can also be used at the end of a crop's growth cycle to trigger the last reproductive stage of the plant, forcing it to process and assimilate endogenous nutrients. Clearex contains specific electrolytes and selected mono and disaccharides which provide energy for the biosynthesis of important plant metabolites and macromolecules. Pre harvest treatments with Clearex are known to enhance the flavor and increase yields in fruits, vegetables, and culinary herbs by flushing out extraneous chemical nutrients.

Clearex Salt Leaching Directions
Before applying Clearex, foliar spray plants with pure water. Use Clearex in the early morning or evenings.

Soil Containers and Gardens
Use 1/2 to one ounce (15 - 30 ml) of Clearex per gallon of water. Pour one to two quarts over plants every seven to twenty-one days. For container gardens, achieve a minimum 80 - 90% run-off. Water and fertilize as usual.

Hydroponic Systems
Use Clearex with every one to two reservoir changes. Use 1/2 to 1 ounce (15 - 30 ml) of Clearex per gallon of water. Pour one to two quarts of solution per plant site with minimum 80 - 90% run-off. Dump waste run-off and fertigate as usual or add Clearex to pure water in reservoir without nutrients. Run system. Use 1/2 to one ounce (15 - 30 ml) of Clearex per gallon of water. Check EC or PPM in reservoir. Run system for 15 - 60 minutes or until EC or PPM stops rising. Dump reservoir. Add desired nutrient dosage and water, then adjust pH. Fertigate as usual.

Pre-Harvest Treatment (Soil or Soilless)
Discontinue fertilizer regime 2 - 3 days before harvest. Use 1 to 2 tablespoons (15 - 30 ml) of Clearex per gallon of water. Water as needed.

Botanicare Feed Chart - PDF format