Hi latewood,

For hydro: Run one cycle flush with RO pHed 5.6 and back to your normal feeding at 1/4 strength.
For soil mix: A good flush with RO pHed 6.3 and wait until your medium dry out then apply 1/4 of your nutrients strength.

Woodoo Juice is great to use along with Pirahna and Tarantula for root mass development.