how to build a hydroponic system for weed

How to Grow Weed in 20 Minutes a Week Using Bubbleponics

How to Grow Weed in 20 Minutes a Week Using Bubbleponics

By Nebula Haze (with Sirius Fourside)

If time is the critical factor in your life, then I am going to show you how little time it can take for you to grow weed indoors in a spare closet or space.

The grow method I’m about to share will actually take less of your time than buying weed from a dealer or a medical marijuana dispensary!

(Plus your marijuana is guaranteed safe, potent, and you can even choose to grow a stain specifically suited to your needs!)

Yep, this method allows you to grow weed in just 20 minutes a week.

I will reveal how this is possible in just a moment, but first, let me make sure I’m being totally transparent about how much time it will actually take to grow weed, and what I mean by 20 minutes/week.

You see, this method is perfect for an indoor grower who’s looking to grow 1-3 plants at a time, and doesn’t want to spend too much time tending their secret garden, yet still wants big yields and potent buds.

With Every Grow Method, Certain Weeks Take More Than 20 Minutes

Now there are a few specific events where you’ll need to plan more time than 20 minutes/week:

  • Initial Setup
    Easy setup takes about 2 hours. (I put on cartoons in the background and the time flew by)
  • First Few Weeks
    To be fair, for the first 1-3 weeks, as you get used to caring for your system, it make take you longer than 20 minutes to properly feed your plants. After your first few weeks, you’ll get the hang of what you need to do, and it’ll likely take you even less than 20 minutes/week to care for your plants.
  • Harvest (Trimming Buds)
    Harvest time requires that your trim all your buds. This process can take several hours with the kind of yields you’ll be getting using this grow method (I also do this in front of the TV, since trimming seems easy and relaxing for me)

Ok, now that you know exactly how infrequently you’ll need to invest more than 20 minutes of your time….

What’s the big secret?


Or, to be more precise and all fancy-sounding, a top fed deep water culture hydroponic system.

Basically, you’re growing the marijuana directly in nutrient-rich water.

A special contraption known as an airstone pumps oxygen bubbles directly into the water.

This adds oxygen to the water, and causes marijuana plants to explode in growth.

In a top-fed system, you also use a water pump to feed water to the top of the roots of the plants; this speeds up the initial growth of young seedlings. Although the top-fed aspect has little effect later on, that initial boost in the beginning can easily shave 1-2 weeks off your total grow time.

The final system looks something like this:

(An added bonus, you are much less likely to get bugs when growing hydroponically than when growing marijuana in organic mediums like soil)

Overview: Here’s What Growing Weed with Bubbleponics Looks Like Each Week:

  1. Draw water from a bathtub or sink
  2. Measure out nutrients into the water, which is quick and easy as long as you have measuring spoons (learn more about marijuana-friendly nutrients here:
  3. Adjust the pH of your nutrient-enriched water. This only takes a few minutes once you get the hang of it, and takes 30 minutes at most your first time. (full tutorial with video by yours truly showing you how to do it here:
  4. Drain water from your reservoir
  5. Add new water to reservoir
  6. Kiss your plants and tell them you love them, make sure their leaves are not too close to the grow lights, and be on your merry way for another week (it’s okay if you peek in to check on them if you’d like ?

It’s true that the process of pHing your water may take a tiny bit longer the first few times. What I can promise is that once you get acclimated to your house’s water and your own system, it becomes easy, almost automatic.

In fact, after a while, you barely have to measure anything, and can even eyeball your measurements in a pinch, only double-checking your measurements if you notice signs of plant trouble.

Sirius Fourside has already put together a complete tutorial on how to grow marijuana with bubbleponics right here:

His tutorial comes complete with pictures on how to set up your system, and literally everything you could ever need to succeed growing weed with bubbleponics.

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Important Points to Keep in Mind When Growing Marijuana With Bubbleponics

  • This system truly works great with any grow light.
    • Fluorescent lights work great for the vegetative stage.
    • CFLs and LEDs are great grow lights for this system and barely produce any heat, so require very little setup.
    • MH/HPS and other HID grow lights get out of control results in a hydroponics system like this
  • Use growth control methods to keep plants short and manageable:
  • Heated reservoir water causes bad bacteria in the water, and this leads to root rot.
    • Root rot is especially terrible because plants can look healthy with root rot up until they’re totally dead.
    • If heat is ever an issue at all, I STRONGLY suggest using a product called Hydroguard with your feedings. It introduces beneficial bacteria which outcompete the bad bacteria. I’ve personally used Aquashield to completely reverse a particularly terrible case of root rot.

If time is the most important factor…

  • Make sure you get a 5 gallon tank/reservoir so you don’t have to change water as often, plants can get big growing with this method!
  • To create a system that’s truly ‘set and forget and use an HPS grow light from beginning to end. You’ll have to spend a bit more time in the beginning to set up an exhaust system to vent out the heat, but once you’re set up, HPS lights don’t need to be adjusted as often as other lights and can be used from seedling to harvest.

About Nebula Haze and Sirus Fourside:

Sirius Fourside was determined to find the most low maintenance method possible to grow weed, and still get great results.

As a result, he found and mastered the art of growing weed with bubbleponics, so you can skip the research and get straight to growing.

The awesome thing about bubbleponics, is you actually get better yields and faster harvests than growing weed in soil. For thousands of years, humans have been using hydroponics to get better yields from crops and we get to benefit from all that knowledge.

How to Grow Weed in 20 Minutes a Week Using Bubbleponics How to Grow Weed in 20 Minutes a Week Using Bubbleponics By Nebula Haze (with Sirius Fourside) If time is the critical factor

DIY How to Build: Undercurrent Hydroponic System

Step-by-step building instructions to make an Undercurrent hydroponic system that works great for growing cannabis plants.


When I did my first grow with DWC I soon realized there were some things I wanted to change on the next go around. I wanted to ScrOG and I didn’t want to have to move the plants to change water or check PH and PPM. Also they got root rot last time, Hydroguard and changing the water once a week kept it in check, but I wanted to not have to change the water weekly either.

I started investigating different methods and the Undercurrent method really caught my eye. I liked DWC already and Undercurrent resolved my issues for the most part. By having the control bucket be where all the water changes and adjustments were done I was able to Scrog, and by keeping the water moving constantly I could extend the time between full water changes.

How it works:

An Undercurrent hydro system consists of bucket or totes, connected near the bottoms by PVC and then a pump is tied in to the PVC and back to a control bucket, so it constantly keeps the water flowing. The plants are in their own totes/buckets and the control bucket is to work out of.

Check out the author’s grow- @quantumhydro333 on IG and QuantumHydro on reddit.

Materials Checklist

Here are the materials you will need, this is for a 4-site setup. So that’s 4 plant sites and 1 control bucket.

DIY How to Build

1. The totes I used were rectangular in shape so I offset the holes on the tote so it would circulate the water in each tote. I had the hole on the right side on the front and the left side on the back of one, and the one it connects to was opposite formation, hole on the left in the front and right on the back (see diagram).

The holes are 2.5” wide to use for Uniseals for a 1.5” PVC. The bottom of the hole for the PVC is 1.25” off the ground. After drilling out the holes with a hole saw (run it backwards and it won’t tear the plastic) then go over it with some sandpaper just to get the roughness off and make for a clean seal.

2. Time to prep the PVC. Cut the PVC to size and glue together the pieces that need to be glued together. After gluing I had a U-shaped piece for the end, 2 L shaped pieces for connecting to the Control Bucket and 2 straight pieces where the totes connected in the middle. You need to drill a hole in the middle of the U-shaped piece for a plastic adapter to be epoxied in so a hose can connect this point to the pump.

After getting the PVC prepped, it’s a good idea to rinse it thoroughly to not get PVC debris in the system when you fill it with water. You will want to round off the ends of the PVC for easier insertion in the Uniseals. Spread some dish soap/liquid soap on the PVC ends and insert into Uniseal. It takes some muscle to get in so don’t feel bad if it’s hard to do.

3. Once you have the PVC installed it’s time to connect the pumps. I’m using a 550 GPH water pump to circulate my water, it connects to the adapter we installed earlier to the pump, then from the pump into the control bucket. I also have a 1300 GPH air pump connected to 2 air stones per plant tote for a total of 8 air stones. The hoses for the air stones are run through holes near the top of the tote.

4. Now for the lids, I used a 6” hole saw (run in reverse again) to make the holes. They fit the net pots perfectly. Once you have those made its time to check for leaks.

5. Fill the water up to an inch below the net pots and plug in the water and air pump. Let it run and watch for leaks. I let mine run for an hour but feel free to test until you feel comfortable. I saw a drop or 2 here and there during testing but just left them and they stopped after a bit. Pretty sure some of the Uniseal just needed time to seat fully.

6. Once the system is together and you’re satisfied there are not leaks then it’s ready for production, I used Hydroton to surround my Rockwool cubes and support them in the net pots.

You will need to rinse the Hydroton thoroughly, it gets quite dusty in the bag. I put the Hydroton in the net pots and ran water through until it ran clear, but if you’re going to use the whole bag, just open the top and poke holes in the bottom and run water through the whole thing until clear. I let the Hydroton dry then added my seedlings to the system the next day. I soaked the clean Hydroton in PH’d water first then if there were long roots I fed them through the bottom of the net pot and added Hydroton, about an inch or two on the bottom of the pot and set the rockwool on it and gently added more Hydroton. You want the rockwool or whatever media your using to be a couple inches below the top of the pot so you can cover it with Hydroton as well.

7. That’s it, once you are this far it’s time to let the system do its work. The first time I had the water all nuted and PH’d before adding plants, but after that I just drained the water with a pump that goes on an electric drill. Then, refilled with water and nuted and PH’d with the plants in place. It doesn’t take long for the system to mix everything together.

Step-by-step building instructions to make an Undercurrent hydroponic system that works great for growing cannabis plants.