I have done it with lower wattage and higher wattage lighting very successfully.First off, this answer warrants its own article as this could be a huge discussion.There is a general rule of them that is passed on from grower to grower that for every wattage of light used you can expect approximately .5 to 1 gram of smoke-able marijuana. HPS grow lights are pretty powerful, producing over 140 lumens per Watt. At $0.25/kWh – $11.16/month. When it comes to HID grow lights, it's best to keep them at least 12" (30cm) away from your plants at all times. Depending on how long you want to veg and type of strain that's a tricky question but I can tell you that me personally will only grow 6 plants under 1 1000 watt fixture. These lights range in power from 100 to 1000 watts. An LED light can be much closer without the worry of your plants getting scorched.The benefits in using HPS over LED is you will most likely harvest a larger crop much easier with the HPS. How long u want veg. Not so fast...APE discusses plant numbers and how to determine how many you need for your indoor and hydroponic garden. I know because I purchased a 1000-watt LED grow light a couple … Go the Distance. How many weed plants can i put under a 1000 watt hps light? Sixteen plants that are grown under a 600-watt HPS lamp could produce about 37.5 grams or 1.3 oz of marijuana per plant. This is a lot for light for your plants. They get bigger. ballast losses) electrical power draw … Longer? Table of Contents. You know a more appropriate intensity for your seedlings is 250 micromoles. They emit light in the ideal spectrum for flowering plants. Sixteen plants that are grown under a 600-watt HPS lamp could produce about 37.5 grams or 1.3 oz of marijuana per plant. So, if your 5’ x 5’ growing space requires 320-480 watts of grow lighting, and you choose the LED route, make sure your LED light features an actual wattage of between 320-480. Estimating that each plant occupies 1 square foot the calculation would be: Total lumens: 600 x 100 = 60,000 Lumens per plant: 7000 Say your grow light manufacturer states that your grow light emits 1000 micromoles of light at 18 inches above the plants. 1000 watt light strong enough for this space. Using the more powerful 1000-watt light just gives you the opportunity to really enlarge those buds.A 1000-watt grow light will cover most floor space in the average grow tents. Large Plants For large plants you need the bright light that halides and sodiums can give. Our HID grow tent packages include both a metal halide (MH) bulb for the vegetative stage and a high pressure sodium (HPS) bulb for the flowering stage to provide your plants with the best spectrum for all stages of growth for your plants. 1000 Watt HPS Grow light At 1000 watts, these bulbs are more efficient than 400 watt bulbs, but less efficient than 600 watt bulbs. The HPS grow light heat is radiant and directed straight onto your plants. . Exhaust Fan: 30 watt x 2 = 60W. Is there a limit? Smaller sized lights like … No there isn’t. About This Setup. Many growers start plants under a metal halide (MH) bulb while the plant is vegetating, then switch over to HPS once their plants start flowering. CONNECT WITH US. This is a very general guideline....once I had a 4' x 8' garden illuminated by one 1000 watt HPS light on an 18 inch light mover. :farm:-I got a 6 x 6 garden wich is (36 feet squared), im grownig in soil using 6 inch pots and lighting wit a 1000 watt HPS >>>>> >>My questin is how many 6 inch pots of single stem cannabis plants can i put in this space and secondly is one 1000 watt light strong enough for this space. More Plants, more yield right? For most plants, this means 40 watts per square foot or more (up to 80 watts per square foot, but this is extreme). If they stretch out, they are more … 1.1.1 To choose a light source is not easy, there are plenty of 1000 watt grow light kits to choose from and many aspects should be considered, such as:; 1.1.2 The most well known and broadly used lamps we’re going to review belong to one of these two categories: The fact that HPS grow lights come on average with between 25% and 40% more lumens per the same watts, it tends to make for a better flowering grow light. On average, a 1,000 watt HPS grow light will put out between 130,000 and 155,000 lumens, which as you can tell, is a lot more than the metal halide counterpart. Because of the way the earth is tilting in the fall, different light spectrums are allowed through the atmosphere.Your weed plants will like a brighter, whiter light in the beginning stages of growth common referred to as the vegetative stage. Under perfect, outdoor conditions, you can expect yields to extend to 500 grams or 17.5 oz per plant. Here is a grow room was 17.5 long by 13.5 wide full umbrella parabolic hood 4 week veg from clone 7 pound harvest 1000 watt grow Use a 600-watt HPS lamp in a grow room that measures 1.2×1.2×2.5 m. (4 x 4 x 8 ft) For an average of around 250 to 500 grams (9.0 to 18 oz): Use a 1000-watt HPS lamp in a grow room that measures 1.5×1.5×2.5 m. (5 x 5 x 8 ft) So, How Many Plants Should You Grow? Assumption: a 600W HPS luminaire should be replaced by an LED system. Depending on the strength of your light, you won't want to go higher than 30 inches (76cm) above your plants. MH encourages short bushy growth while HPS encourages long/stretchy growth and flowering.