Buyer’s Guides

Quick Growing Reference

Ideal Humidity: 40%-60%
Ideal Temperature: 68-75 °F
CO2: 300-400 PPM minimum
Soil pH: 6.0-6.8
Hydroponics pH: 5.8-6.2
Growth Light Hours: 15-18/day
Bloom Light Hours: 10-12/day

1000W Optimal Light Coverage: 4’x4′
600W Optimal Light Coverage: 4’x4′ or 3’x3′
Air Cooled Reflector Mounting Height: 18″-24″
MH Bulbs / Blue Spectrum: Plant growth
HPS Bulbs / Red Spectrum: Plant bloom

Basics - Build Your Knowledge Features
Grow Lights

Tip: You do not need to wear gloves or use a cloth when handling grow lights. Clean hands are fine.

Tip: Grow lights require a 12 hour continuous burn in period when first turned on to perform at their maximum potential. For some grow lights, especially the Sun Pulse line, this burn in is required.

High Pressure Sodium vs Metal Halide? Think of the question in relationship to nature. MH bulbs are blue/white when you look at them, HPS bulbs are yellow/orange/red. At the end of winter when the light outside is a cool blue/white coming off a snowy field plants are starting to sprout and grow. During a hot day in summer when the light outside is a yellow/orange/red plants are fruiting/flowering. Use this as a guideline to making your choice.

Seed Starting

What do seeds need to germinate? Most seeds don’t require light to germinate, but all require the proper soil temperature. The temperatures listed on seed packages refer to soil temperature, not air temperature.

Humidity domes? Seeds require consistent moisture. The soil needs to be moist but not soggy to prevent the seeds from rooting. A humidity dome is an easy way to retain moisture as your seeds germinat