by Nebula Haze
250W HPS Grow Setup (For Hobbyist Growers)
- Average Yields: 4-9 ounces
- Recommended 1-4 plants
- Grow space is 2’x4’x5’ or larger
- View a grow journal using this setup
- Another grow journal in this setup
About This Setup
The 250W HPS is one of the best (if not most popular) setups a grower can use for small-scale indoor growing. It delivers impressive yields, high potency, lower starting cost, and it’s easy to use since the light can get so close to plants. The 250W also escapes much of the heat issues that larger models of HPS have, though they still have that tell-tale color that can alert people to your grow if it escapes the tent.
Pros: Cheap, easy to use, great yields, awesome potency
Cons: Harder to find, old-fashioned, harsh yellow light is easily distinguishable as a grow light
My last harvest with a 250W HPS grow light (dry yield was 8.97 oz) – View a video of the plants just before harvest
- Total Setup Cost: $775.00
- Estimated Electricity Cost: $21-43/month (based on $0.12/kWH to $0.25/kWh – see breakdown)
- Total Cost for Entire First 4-Month Grow (Setup + Electricity): $947 ($105-236/ounce)
- Total Cost for Second Grow (Nutrients + Electricity): $225 ($25-57/ounce)
Note: Because the 250W light runs significantly cooler and tends to grow smaller plants compared to the bigger HPS grow lights, the 250W setup uses a cheaper exhaust fan and carbon scrubber compared to the other HPS setups, which brings down the overall cost a bit.
Complete Grow Supply List
This cannabis grow room setup list includes all the supplies you need to get to harvest.
250W MH/HPS Grow Light
- Recommended 250W Grow Light (ballast, bulbs, and reflector sold separately)
- Ballast – Yescom 250W MH/HPS Digital Ballast
- Bulbs – 250W MH bulb & 250W Super HPS bulb. This “Super HPS” bulb puts out significantly more light than the generic HPS bulbs so don’t skimp. If you must choose just one bulb, get just the HPS. An MH bulb helps plants stay shorter and get bushier if used in the vegetative stage, but an HPS bulb can be used from seed to harvest in a pinch.
- Reflector – iPower Gull Wing Reflector. I’ve tried several different hoods with this setup and I’ve found the wing reflector (despite being the cheapest option) actually gets more light to more parts of the tent with a 250W HPS than a standard hood.
- Cost: ~$175
The cheapest and most flexible way to buy a 250W HPS is to get the ballast, bulbs, and reflector separately. You’ll end up with a better grow light for much less money than an “all-in-one” 250W HPS kit.
* Alternative all-in-one 250W HPS – This hood cuts off light from the sides and costs more money than piecing the parts together, but if you want a grow light kit with the ballast and reflector built together…
- Sun System Grow Lights Digital 250/400 Complete (runs 250W or 400W bulbs)
- 250W Bulbs – 250W MH bulb and 250W Super HPS bulb
- This model can run 250W and 400W bulbs, so you can upgrade to a bigger bulb later if you want.
- Cost: ~$280
** Alternative/Equivalent LED Grow Light: VIPARSPECTRA Reflector Series V600 LED (260W)
- Grow Tent Recommended Sizes
- 2’x4’x5′ – an example is Apollo Horticulture 48”x24”x60”
- 2’x4’x6′ (better choice; you’ll appreciate the extra height!) – I use the TopoLite 48″x24″x72″ Grow Tent
- 4’x4’x7′ (this is a good tent if you plan to upgrade the grow light) – an example is Apollo Horticulture 48”x48”x80”
- Learn more about grow tents
- Cost: ~$100
- Exhaust Fan
- Carbon Scrubber
- Growing medium: Coco coir or soil (hydroponics for more advanced growers)
- Containers: Smart pots or Air Pots between 2 and 7 gallons
- Recommended: One bag of this coco potting mix which is enough to fill 5 x 3-gallon smart pots
- Cost: ~$70
- You need a “vegetative” or all-purpose plant nutrient for the first part of your plant’s life
- You need a “bloom” or low-nitrogen nutrient for the budding phase
- Many nutrient systems have a nutrient schedule so you give your plants the right ratios for each stage of life
- Always start at half strength with a new base nutrient system because the recommended strength is typically too high for cannabis
- Get examples of great cannabis nutrients
- Recommended Base Nutrients: General Hydroponics Flora trio (use at half strength) + CaliMagic (use at full strength)
- (Optional) Bloom Supplement: General Hydroponics Floralicious Bloom
- (Optional) Root Supplement: Botanicare Hydroguard
- Cost: $50-100
Other Supplementary Items
- Get your seeds – $5-12/seed (on average, can be more or less depending on the breeder)
- 24-Hour Timer (to put your grow lights on a timer so the plants get a day and night period on a schedule). Why do cannabis plants need to be on a day/night schedule? What about autoflowering light schedules? – $10
- Water containers (I personally use a 3-gallon or 5-gallon water jug to mix up nutrients, but anything can work) – Much cheaper at Wal-Mart ($5-15) than online!
- 6″ Ducting and Ducting Clamps – to connect your fan and carbon filter together – $15
- A few pairs of 1/8″ Rope Ratchets (sooooo handy) – These can be used to hang your grow light or carbon filter from inside the tent, and still be able to easily move it up and down without needing any strength. Some grow lights come with a set of rope ratchets, but even if yours does, it’s a great idea to get extras to hang the carbon filter – $20
- Thermometer/Humidity Monitor with a probe so you can keep track of the temperature inside the tent – $15
- PH Test Kit – Prevent potential nutrient deficiencies by testing the water pH: https://www.growweedeasy.com/ph – $15
- Measuring spoons for measuring out your nutrients (many people already have these) – $10
- Learn about other cool growing tools
Estimated Cost: $775 plus the cost of seeds
Got a 6+ oz Harvest! Read the tutorial on how to grow exactly like this! (in this setup)
A hydroponic plant grown in this setup (6+ oz harvest!) – Read the grow journal!