Northern Lights Hydroponic & Garden Supply - Grow Guide - Madison Heights, MI
Northern Lights Grow Guide
Click on any of the links below to find useful facts and information.
Glossary of Horticulture Terms
Know the language used in the hor
Why use supplemental lighting for indoor gardening?
Learn which type of lighting is best for you
FAQ- Horticulture Lighting
Learn about HID lighting, how it works, and how to use it
Understand the spectral Distribution Chart, Color rendering Index, and learn when to replace your lamps.
Power Cost Estimation Guide
Use this handy guide to figure out the cost of using various fixtures
Conversions / Quick Reference
Not all labels go by the same measurements.
Use this chart to find out exactly what equals what.
Identify whats living in your garden with this picture chart
NL in the News