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Read Answers for Lumatek 1000W Digital Ballast HPS/MH 120V/240V Dimmable & Multi-Watt

If i run the 1000w digital electronic ballast, will it run 8.42 amps even if i run 240 volts. Our is 8.42 amps for the 120 volts? -John

Correct, the 8.42 amps draw is only at 120 volts. If you run it on 240 volts you will cut the amps used in half letting you run more on one breaker! -Greners Staff

Is the ballast american made? -Robin

No. None of the electronic ballasts that we know of are made in the USA. There are a several of the magnetic ballasts that are. Those are the Sun System 1 & 6 from Sunlight Supply, the Powerhouse from Hydrofarm, and all the magentic ballasts from R&M/C.A.P. -Greners Staff

I just bought a LK1000 MH/HPS ballast and no where in the directions does it say anything about the two white buttons on the other end of the ballast. What are they for? -Joan

Those are the fuses. The white caps/buttons will pop out when a fuse has blown. -Greners Staff

Hi. I'm intrested in using the 600 watt setting when my plants are small if its going to save me money on electricity. How much less amps does this ballast draw in at 600 watts when plugged into a 120 volt power supply? -scott

3.33 less amps. The ballast will draw ~5 amps on a 120 volt power supply at the 600 watt setting vs ~8.33 amps on the 1000 watt setting. For this I am just using Watts/Volts=Amps since there will be a slight variation depending on your exact voltage that we would not be able to test for you here. The dial down knob does really take it down to 600 watts, we have tested this with a power use meter. It came out to 1058 watts on the 100% setting and 640 watts on the 600 watt setting as we tested. -Greners Staff

I just purchased the Lumatek 1000w dimmable ballast. I want to use the 600 watt setting for vegging. Do I need to change to a 600 watt bulb or will be okay with the 1000 watt bulb. Do you know the watt output on supper lumen setting? -Billy

Yes you can 1000w bulb on the 600w setting for vegging without harming the bulb. This is actually what the dimmable function was designed for. On the super lumen setting the watt output will be around 1050 watts. -Greners Staff

what does this exactly mean "Dimmable" Is it like the quantum? Say I get your 1k package, during summer I loose the heat battle and want to turn it to 50% can I do that? just switch the balast to 50% or I need the different watt bulbs to consider it dimmable? is it like the quantum dimmable I guess Im asking where you can rock a 1k, turn it to 75% or 50% and get realistic results? I saw a nice video testing the quantum lumen output at the different settings, and it worked, voltages too! -Steve

The Lumatek dimmable ballast is dimmable not by percentage of overall output, but by increments i.e., 1000w, 750w, and 600w. You can run a 1000w bulb on any of these settings, but you might get a different spectrum if you run a 1000w bulb on a 750w or 600w setting, but the difference in spectrum usually isn't drastic. -Greners Staff

I have a question that i cant get a straight answer. I have a useable grow space of 6 x 8,i have a lumatek 1000 dim. light set up and my question is if i had a second set up and spread the light with two hoods on a lower ballast setting would i be helping or hurting the plants? -Billy

The answer is yes. The closer you can get a light source to the plant surface the better. So if you split the 1000 watts to two 500 watt bulbs spread out that would improve your yields. The accepted commercial setup in the USA is two 1000 watt lights per 4x8 area, or three 600 watt lights for that area. -Greners Staff

If you were going to run 12 of the 1000w lumatek ballast off say a CAP 16 light controller, does it make a difference if you use the 120 or 240v cord? Thanks -GT

The difference in running a 120v cord vs. a 240v cord is the amount of amps you will draw. The CAP 16 is rated for 80 amps, so using twelve 1000w ballasts at 120v would draw about 96 amps, which would overload the CAP 16. Alternatively, using twelve 1000w ballasts at 240v would draw about 48 amps, which is within the usable limit of the CAP 16. Also, make sure that the circuit breaker that the CAP 15 is connected to is at least 50 amps. -Greners Staff

I have the lumatek digital ballast 1000w and the plug wont go into my reflector i got the radiant air cooled 6" the plug has three points but not like the ballast is there a attachment i can use? -jr

Yes, you need a common to Hydrofarm adapter. You can find this here: -Greners Staff

I just switched over half of my mag ballasts to the Lumatek 1000w switchable. I'm really happy so far and I'm probably gunna switch the rest next. So I'm wondering the best time to go to The Super Lumens setting... Last month of flower ???? Last two weeks???? and how much more lumens are possible? Do you have readings on what actually comes out??? also running all new Digilux bulbs with them which are supposed to be rated at 150,000??? -Anthony

The choice on when to use the super lumen setting varies from user to user. I have seen two methods used with noticeable results. One grower is adamant about changing his lights every two months, and does not care about shortening the lifespan of his bulbs. He uses his super lumen setting at all times, then dims to 1000w for 7 days when transitioning from seedling to vegetative and again when transitioning to bloom. This eases the shock of rapid lighting cycle changes, but still is superdriving the plants compared to a standard 1000w system. Another grower uses the super lumens just like you suggest, and turns it up the last month of flower. Additonal light, except in times of shock and stress, is always useful to the plants as long as you aren't getting light burns or causing heat stress, experiment with the super lumen setting and find out what works best in your environment, you can't lose. Once we finally get the PAR meter we've been drooling over we will begin testing numerous bulbs and lights as scientifically as possible. -Greners Staff

What is the average life expectancy of this ballast? -David Bass

We rarely get returns during the later part of the warranty period - which goes out for five years. Generally if they go bad they go bad right away. Lumatek does not publish an degredation information on their website about the ballast so we don't know what happens when they are 10 years old. You may want to ask them this at this tech support email address -Greners Staff

Can I purchase the 600 watt and use a 400 watt hps bulb -dan

no unfortunately, the ballast are only designed to lessen the power on a correct wattage bulb, and not use a lower wattage bulb if you were to use a lower wattage bulb on a higher wattage ballast it would pretty much turn into a glass grenade and cause some serious damage. -Greners Staff

Does the "Lumatek 1000W Digital Ballast HPS/MH 120V/240V Dimmable & Multi-Watt" package come with a 240 volt cord and plug, or are you capable of plugging the 120 volt cord into a 240 volt outlet? -jerry

The "Lumatek 1000W Digital Ballast HPS/MH 120V/240V Dimmable & Multi-Watt" package is capable of running on a 240 volt outlet but in fact does not come with the 240 volt plug and cord. The cord can be bought here on our website for $8.96 and is under the name, "240V "Standard" 6' Ballast Power Cord" -Greners Staff

Does the Lumatek 1000W Digital Ballast HPS/MH 120V/240V Dimmable & Multi-Watt have RF interference issues? -heath

The Lumatek ballast, if properly connected will create minimal RF interference at less than 5 ft. and will not interfere with pH equipment. In order to ensure minimize RF output, the outlet cord must be wired directly to the socket. If the ballast is connected to an existing unshielded wire, it will cause radio and satellite television interference. -Greners Staff

Can I run my Lumatek 1000W Digital Ballast to two 600 watt fixtures? -Bryndol

You must have a magnetic ballast in order for it to be possible to split a 1000 watt ballast in to two 600 watt fixtures. -Greners Staff

Is this the newer model with the port for the ice pack? -Mx

Yes, all of the products on our site are up to date models! -Greners Staff

What does the plug type option mean for the Lumatek 1000W Digital Ballast HPS/MH 120V/240V Dimmable & Multi-Watt? What is the difference between the "common" and "hydrofarm" plug type? -Trent -Trent

The plug type option for the Lumatek 1000W Digital Ballast HPS/MH 120V/240V Dimmable & Multi-Watt is a list of compatible plugs with each product. The difference between "common" and "Hydrofarm" is the arrangement and type of prongs used to plug in. For lists with images of compatible plugs visit: -Greners Team -Greners Staff

If I buy the 1000 watt dimible ballast does that mean you can change the bulb from 1000 to 600 and just change the setting on the ballast and have it operate correctly. I think a lot of growers are confused about this. I believe that you can only dime down a 1000 watt bulb to 600. And if so will it still produce as well as the correct 600 watt ballast and 600 watt bulb? Can you please advise. Many of us thing you can just buy the 1000 watt ballast and the get away with buying the other different watt bulbs and grow in any of the three dimible settings. Please inform. -Adam

Yes you can, that is the purpose. HOWEVER! BIG DEAL HERE! IF you have a 1000w ballast and want to dim down to 600w using a 600w bulb you will NEED to turn off the ballast switch it and the bulb and then fire it back up. YOU CANNOT, switch the ballast up to 1000w with a 600w bulb unless you want a eye full of glass as the bulb will more than likely explode! BE CAREFUL when switching! -Greners Staff

I have a multi watt ballast. It has a white button on it. Is that the reset or on/off switch? -Dianne Rizzo

Hello Dianne, That is the manual fuse. If the ballast has a surge it will "pop" the button(s) instead of doing damage to the ballast. If your light is not working the white button(s) is a good place to start. Unplug the ballast first, second press the button(s) in, then plug it back in. This generally will "reset" ballast. Cheers, Greners -Greners Staff

Lumatek 1000W Digital Ballast HPS/MH 120V/240V Dimmable & Multi-Watt


Product Information

The market's most popular and best digital ballast. The Lumatek eballast is a performance leader.

  • Dimmable. Allows light brightness to be turned down, or turned up to the Super Lumens setting.
  • Multi-Wattage (read instructions before use). Ballast powers a 1000 watt, 750 watt, or 600 watt bulb.
  • Operate both metal halide (MH) and high pressure sodium (HPS) lamps. No changes are required.
  • Up to 20% MORE LUMENS; faster growth, bigger harvests.
  • Unique graduated fin design for more efficient cooling. No cooling fan necessary means fewer moving parts.
  • 3 years full + 2 years no hassle warranty.
  • Internal resin coating protects components for a long life.
  • External breaker system protects against power surges.
  • Generator compatible.
  • Cuts off when a short is detected. For ultimate safety.
  • Completely silent.
  • Comes with your choice of reflector plug style. Not sure which you need, view compatibility chart.
  • Lumatek frequently asked questions.


  • Does not include 240V Power cord. Does include a 120V power coord.
  • sources Lumateks from several suppliers so they are always in stock, and each supplier uses their own slightly different box. They are all the same ballast inside the box.

Why Digital Ballasts?

  • More Lumen Output - Up to 20% more lumens output than some old style magnetic ballasts ...More light equals more yield. We urge you to test this yourself with a good quality light meter. Be sure to also check how much power the ballast is using with an ammeter as many so called 600w magnetic ballasts now draw up to 750w as standard to try to keep up with Lumatek’s lumen output.
  • Stable Light Output - Excellent for Pharmaceutical-agriculture, laboratories and other uses where precise regularized output is essential.
  • Fast Start-up - It reaches full brightness in under one minute; magnetic ballasts typically take about twenty minutes.
  • Completely Silent - No noise or vibration of any kind
  • Produce Less Heat - Less heat generated by the ballasts allows cooler running of the environment. Less heat is less wasted electricity.
  • Longer Bulb Life - Lumen output loss over time, with the correct lamp, is dramatically less than with magnetic ballasts.

Other Lumatek ballast sizes available:

Additional technical specs at

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