How to use a ballast

A question from a fellow grower:

I’m getting a 1000 watt ballist that has
3 different settings 50%,75%, and 100%
Would you use the 100% for vegging
And the 50% for flowering?
Could you explain this for me please

I would use the 50% setting for early veg, and increase the settings, 75%, 100% until I switched to Flower. I would then continue with 100%.

On another note; If the temps are too high, use the lower settings until you find a happy medium! :slight_smile: