Elite 720w Foldable LED plant health Please note that Hammerhead is

Please note that Hammerhead is not part of the Advanced Nutrients “pH perfect” range of products and if Hammerhead is used you will need to check and adjust the pH of your reservoir regularly

which can be used by plants in bloom

That being said

This will ensure there is no compatibility issues with Potassium

Elite 720w Foldable LED plant health Please note that Hammerhead isElite 720W Foldable LED (With Ballast) The high performing Elite 720W Ballast Boosted Six Bar Fixture is powered and controlled by the Elite 600W Digital Ballast. This ballast can be fixed directly to the LED. The fixture is lightweight and easy to install. The included rope ratchets allow the height of the fixture to be easily adjusted as plants grow. This full spectrum fixture is ideal for both the vegetative and flowering stages of plant growth.