How to successfully flower marijuana plants with fluorescent lights alone?

I am into growing marijuana plants these days. But they are not flowering.

Fluorescent lights are insufficient in intensity and do not provide the full spectrum of light.

You need to buy grow lights. To begin with, use 400 watts, then 1000 watts, growing for 18 hours before reducing back to 12 hours to begin the flower cycle.

MORE: Why Farmers Around the World Are Updating to LED Grow Lights?

What Others Are Asking

How Do I Know My Grow lights Are Harming My Plants?

This is a first-time grower. I received my friend’s old grow lights. They are square panels with bottom-mounted blue and red LEDs. The issue I’m having is that they have absolutely no labels, thus I have no idea how effective they are. How can I tell whether these lights are damaging my plants?

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