SOLISTEK - DE - MH - 10K - 1000W 1kilo You only use it during

You only use it during the initial transition when you switch your plants from early growth to the bloom phase

ebb and flow systems and the cultivation on clay particles

bloom-boosting supplement

For house plants

the amount of potassium and phosphate needed is larger

SOLISTEK - DE - MH - 10K - 1000W 1kilo You only use it duringSolis Tek 1000w DE 10,000 Kelvin Metal Halide Finisher is to be used during vegetative growth, and during the last 7 to 21 days of bloom to allow better ripening and finishing. Compatible will all SolisTek DE Reflectors. We cannot verify compatibility for non Solis Tek DE fixtures (but it'll probably work.)