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Hydroponic Drip Irrigation System

Drip Irrigation Hydroponic Systems

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Other Hydrponic Systems you should consider

  • Aeroponics – This is the process of growing marijuana in an air or mist environment however without using soil or any kind of medium.
  • Continuous flow – Continuous flow techniques include NFT and Drip systems. The basic concept is a continuous flow of nutrients with good drainage and flow.
  • Deep Water Culture (DWC) + Recirculating direct water culture systems (also known as RDWC) + BubblePonics.
  • Drip Irrigation – Also known as trickle, micro or local irrigation. Uses small emitters to drip nutrients directly onto the roots or soil of your plants. Saves water and nutes, can be used with mediums and soil.
  • Ebb and Flow – Or Flood and Drain hydroponics is simply a method to flood your pots with a nutrient solution at regular intervals and then let it drain back into the reservoir.
  • Nutrient Film Technique (NFT) – Nutrients are pumped from the reservoir into a tray to form a thin film of nutrients constantly flowing with the roots of your marijuana plants dipped in them. There is no growing medium.
  • Wick system – One of the most basic systems to use, if you are just starting out and want to get going today, try this.

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What is Drip Irrigation?

Drip irrigation is a successful hydroponic technique that relies on a regulated flow of nutrient solution, top fed to your plants. It is not just for hydro though, many soil based systems also use drip irrigation techniques to feed their plants.

Drip irrigation is an efficient system with very little wastage. Growers who use DWC systems or NFT systems will know that they need to deliver large quantities of nutrient solution to their plants which, once spent, goes to waste. If you have a garden then this excess solution can be recycled on your other plants. However, in most cases it just goes down the sink which is not environmentally friendly.

Drip irrigation systems slowly release just the right amount of nutrient solution that your plant requires, thus saving water and wastage. There is no need to periodically empty away tanks of solution to replace them with fresh ones.

For some people this water efficiency may not be important, but for those of you living in dry areas where water is at a premium, the water efficiency of drip irrigation systems could be a deciding factor.

Marijuana Plants in Drip Irrigation System

Why Use Drip Irrigation?

  • Drip irrigation is a low maintenance system that only has a few parts that can go wrong;
  • Drip irrigation is efficient with water and nutrients;
  • Drip irrigation is effective and more productive than soil only systems;
  • Drip irrigation is easy to set up and can be done on a tight budget;
  • We recommend drip irrigation systems for both beginners and advanced hydroponic growers.
  • Drip irrigation is one of the simplest of the hydroponic methods and one that is often used in conjunction with other systems to create superponics systems. Many commercially produced grow boxes, such as the Superflower use Superponics systems.

Hydroponic Drip Emitter

How Does Drip Irrigation Work?

How it works is that tubing carries your nutrient solution directly from the reservoir to an emitter which slowly releases the solution directly into the plants’ growing media.

Normally the media used in a drip irrigation system will be either expanded clay pellets or Rockwool or similar inert hydroponic growing medium. With these set ups there will be some run off which will need to be returned to the reservoir.

High pressure commercial drip irrigation systems are sometimes operated as ‘run to waste’ systems. This means that any excess nutrient solution coming from the growing medium goes straight to waste rather than being recirculated. This ensures that the plants are getting maximum nutrient solution every time and also helps protect against fungal infections.

Most home grows will require a recirculating system and this benefits from the efficiency of this system.

Soilless mixes of coco and peat moss, like soil based systems that use drip irrigation, will have the flow set so that there is no run off. With a big enough reservoir, these systems can be left for long periods of time without any intervention.

Some soil systems also use drip irrigation to feed the plants, like this outdoor set up.

Marijuana Drip Irrigation Outdoors

To get the solution flowing in a drip irrigation system it needs to be under pressure. This can be achieved by either a gravity feed or by using a water pump.

The reservoir may be remote from the growing area or may be self contained, as in the ‘bucket’ type systems (see below). In these systems the solution run-off is simply pumped back up to the reservoir from below.

The flow from a drip irrigation system will require timers to regulate it and allow the growing medium time to breathe between flows. Normally timers are set to come on 2 – 4 times daily.

Drip Irrigation System Marijuana

A Typical drip irrigation system might run 3 times per day (every 8 hours) for 6 to 10 minutes.

Construct Your Own Drip Irrigation System

There are many ways to construct a hydroponic drip irrigation system. As with all systems it is important to understand the concept and then use your own innovation.

When building your own drip irrigation system you will need the following:

  • Emitters – You will need one emitter for each plant. There is a wide range of emitters available inexpensively from hydroponic stores and garden centers;
  • Spaghetti Tubing – You will need one to fit each emitter. As above, widely available everywhere;
  • Opaque Hose or PVC Tubing – Depending on how many plants you intend to run in your drip irrigation system you will require varying lengths and sizes of larger tubing to feed all your spaghetti tubing. Basically, the bigger the system the larger the hose required. Two inches is enough for most small home systems;
  • Water Pump – You will need a water pump to move your solution around. Submersible fountain pumps are easy to get and will normally do the job. Most operate at around 300 gallons per hour and this is more than enough for domestic systems;
  • Tray – Although it is possible to individually plumb in the run-off from each pot for return to the reservoir, the easiest way to do it is to have all of your pots in a large tray. Just add an outlet on the base of the tray and feed this into the top of the reservoir. By allowing the run off to ‘fall’ into the reservoir you can also add oxygen to the solution.

Bucket Drip Irrigation System

Step by Step – Bucket Drip Irrigation Systems

One of the advantages of a drip irrigation system is the ease with which you can add more plants to the system. It just requires another spaghetti tube and emitter. However it is really easy to build a stand-alone bucket system for your plants that will normally serve just one or two plants, depending on the size and shape of the bucket/tote that you use.

A bucket drip irrigation system basically works by growing your plant suspended in the lid of a bucket. A water pump pumps nutrient solution up from the bucket via a tube through the lid. The solution trickles over the plant’s roots and falls back into the bucket to be recirculated.

Follow these simple instructions to build your own self contained, single plant, drip irrigation system:

  • ) Take a 5 gallon bucket with lid and drill a 4” hole in the centre of the lid;
  • ) Drill a hole just a couple of inches down from the rim of the bucket that is big enough to pass through the flex (and plug if you don’t want to rewire it) of your water pump;
  • ) Drill a 2” hole in the lid next to the 4” hole you have already drilled;
  • ) Clean all dust and detritus from the bucket;
  • ) Attach an 18” length of ½” tubing to the water pump;
  • ) You will now need to reduce the size of the ½” tubing as this will be too big and will flood the plants.
  • ) Attach a ½” to ¼” reducer to the open end of the tubing;
  • ) Attach a 4” length of ¼” tubing to the reducer;
  • ) Place the pump in the bottom of the bucket;
  • ) Feed the power cable through the hole in the side;
  • ) Feed the reducer and tubing through the smaller hole in the lid;
  • ) Fit the lid to the bucket and push the tubing back into its hole so that the reducers sits flat on the top;
  • ) Drop a 4” net cup into the 4” hole on the lid;
  • ) Fill the net cup with expanded clay pellets;
  • ) Use a clip to place the ¼ tubing so that it flows into the growing medium;
  • ) Just add a plant and your nutrient solution and you are ready to plug it in and start growing hydroponically;
  • ) Don’t forget to use a timer on your plug to run the pump for around 6 minutes, 3 times per day.

Operating a Drip Irrigation Hydroponic System

Once you have your timings dialled in and are happy that the system is working, drip irrigation is an extremely low maintenance system. Apart from occasional checking for clogged emitters the system can be left to run itself whilst you get on with other exciting stuff.

Young Marijuana Plants with Drip System

Mature Marijuana Plant with Drip System

Summary

  • Drip irrigation is easy to set up and suitable for beginners;
  • Drip irrigation is efficient and ideal if you are on a budget or live in an area where water conservation is important;
  • There are few parts to go wrong with drip irrigation;
  • Watch out for clogged emitters.
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From the forum

How to Grow Marijuana Forum - Growing Marijuana Indoors & Hydroponics

5 thoughts on “Hydroponic Drip Irrigation System

  1. Mike says:

    Not recommended. Grows well but too much algea, water is not hidden from the light. Your medium and stems will be rotten as well with root rot. Bubbleponics is pretty much the same inside with tubes higher inside the nets. With that you’ll need a type of root inncoulent to prevent algea still. Theres hydroguard, ag garden friendly (98% baciloius), heisienburg tea, or other stuff like dutchmaster root zone.

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    Rating: -4 (from 6 votes)
  2. G says:

    I want to do a drip system with a 50/50 mixture of cocoa. Wondering how long do I run the drip and do I only feed them with the lights on. I’m a lil nervous using a drip because I have absolutely no experience. Need advice. Strains are gorilla clue #4 and dead head OG

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    Rating: +3 (from 7 votes)
  3. Mike says:

    Do I fill the entire bin like DWC? My plants are dying and I’m not sure why. They look over or under watered that or thier not getting enough nutrients or oxygen. I have 1 Gph emitters a pump and airstone pumping air 24/7 so I know it’s not going stagnet. Don’t know how this works the roots go no where as a DWC they go in the water. They seem healthier running water 18:6hours with the lights

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    Rating: -1 (from 3 votes)
    • GrowinGreen says:

      What is your growing medium?
      Are you running pots or table(s)?
      What size pump are you using?
      What lighting configuration are you using?
      Where are you growing?
      Ambient temps?
      Canopy temps?
      Rez temps?
      What issues are the plants exhibiting exactly?
      How old are the plants?
      Nute and feeding schedule?
      pH and EC/PPM(700)?

      I’ll try to help.
      Growingreen2@gmail.com

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      Rating: +1 (from 1 vote)
      • Mike says:

        They died. nets need to be near the water or just lighly soaking. I found algea and stem rot too. Next grow went with bubbleponics. With high quality airpumps. Chiller and root innculant i found ag garden friendly 98% baccilus, hydroguard, diy heisienburg tea dutchmaster root zone i put a 600 gph to stop clogging. Using gh trio and supplements if they get sick.

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        Rating: +1 (from 1 vote)

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