How far should a 400 watt HPS light be from plants?

How far should a 400 watt HPS light be from plants?

For 400W HPS, the best distance from seedlings is between 12 inches or 30.48 cm (closest) and 19 inches or 48.26 cm (furthest). What is this? 400W HPS grow lights are the most commonly used HPS grow bulbs. These lights can cover around 16 square feet and produce high yields.

How much can a 400 watt HPS yield?

Best marijuana yield indoors 400 watts of an HPS grow light could lead to 400 grams (14 ounces) of weed at the end of the day. 1200 watts would lead to 1.2 kilos (42 ounces) of marijuana, etc.

Is 400 watt HPS good enough?

When it comes to bulbs, the most commonly used sizes are 400W, 600W and 1000W. As a general rule, 400w HPS bulbs are the most common, 600w HPS bulbs are the most efficient, and 1000w HPS bulbs are the most powerful (but also the hottest).

How many watts do I need for a 4×4 grow tent?

For a 4×4 tent, you should have a grow light having an actual wattage range of 500-600 watts (assuming flowering plants which require a lot of light and are congregated in a single area. Vegetative growth for high-light plants need about half this wattage).

How far should grow light be from seedlings?

about 2 – 4 inches
Different plants have different light intensity needs, but most seedlings grown for the garden will need higher intensity light to flourish. In general, the leaves should be about 2 – 4 inches away from the light source (assuming use of a fluorescent bulb – see below).

How high should grow light be from seedlings?

between 24-36 inches
Where Should Grow Lights Be Located? For seedlings, LED grow lights should generally be mounted between 24-36 inches above the plant canopy – however, this depends on the power (wattage) of the light source.

How many plants can 400-watt HPS grow?

When growing with HIDs (HPS and MH lights, for example), consider these options: Yield Lab 400W HPS+MH Air Cool Hood Reflector Grow Light Kit (Price: $189.95) — A 400w HPS light provides 55,000 lumens, while a 400w MH light generates 36,000 lumens. This light intensity is enough to provide coverage for 1 to 2 plants.

How many lumens does a 400-watt HPS put out?

50,000 lumens
As a side note: A 400-watt HPS luminaire initially supplies about 50,000 lumens. The rule of thumb is to reduce the HPS lumen output by half to determine the LED lumen output, which would be 25,000 lumens in this case.

How many watts does an Autoflower need?

Usually, you would need around 75 W per plant, so by following the table we can calculate how many watts we would need for 30 plants in a 6 square meter (64.5 ft2) space. If you’re growing less than 14 plants, you can just look it up on the table.

How big of a grow light do I Need?

For example, if you are growing in a 5’ x 5’ space but your plant canopy only takes up 4’ x 4’, you don’t need a grow light capable of lighting the 5’ x 5’ space – it would be overkill. Most flowering plants grow best with 20-30 watts of light per square foot.

How big of an area do you need for a 400W grow?

400W HPS Grow Setup (For Hobbyist Growers) Average Yields: 7-14 ounces Recommended 2-6 plants Grow space is 3’x3’x6′ or 4’x4’x6′ (bare minimum is 2’x4’x6′)

How big of a grow tent do I need for a 400W bulb?

Sun System Digital 400 Complete – Get a 400W MH bulb and 400W HPS bulb with this setup 4’x4’x6.5′ (recommended) – an example is the CoolGrows 48”x48”x80” Grow Tent – plenty of room to grow! A quality 6″ exhaust fan works best.

What kind of light do you need for a marijuana grow room?

High quality LED lights such as Lush Lighting LED grow lights. If you have a very small grow space using SCROG, Sea of Green, grow chambers, grow tents, or autoflowering marijuana, you could use a T-5 high output fluorescent. LIGHT COVERAGE: For stationary lights, one 400 watt HID bulb provides adequate light for 8-9 square feet of space.