A drip system in hydroponics is very similar to a drip irrigation system when growing in soil. This system consists of a large tray filled with growing medium, such as clay pebbles. Plants are placed directly into the medium, and each has its own drip pipe nearby. An external water tank with a pump and air stones constantly supplies a drip feed of water over each plant. The roots of these plants are constantly exposed to air, and the excess water drips down the medium and back into the external tank.
A gap of air between the surface of the solution and the bottom of the lid aerates the upper roots. This provides oxygen to the root system and removes the need for an air stone. The roots continue to grow down into the solution as the level reduces. Growers just need to make sure they top up their containers before their plants drink up all the fluid.
Wicks are used to passively transport nutrient solution to the roots. One end sits in the nutrient reservoir and the other in the growing container. Wicks pull water from the reservoir to the roots using capillary action.
There are numerous types of passive hydroponic systems, but the Kratky method and wick system are two of the most popular.
Strain selection is an important factor of hydroponic growing. Plants grown within these systems are free to uptake nutrients extremely fast, which often results in explosive and rapid growth. For this reason, selecting a large, towering sativa variety won’t be your best choice, especially if your system resides within an indoor grow tent.
The nutrient film technique features a similar setup to the ebb and flow system. However, instead of occasionally flooding the growing tray, it provides a constant stream of water and nutrient solution to the roots. The reservoir contains an air stone to aerate the solution and an electric water pump to circulate the solution into the growing tray. The growing tray sits at a slight angle to enable the solution to flow downward and back into the reservoir after passing the roots.
Although there may be more oxygen dissolved in the water at lower temperatures, at least in my grow tent that apparently isn’t the limiting factor to growth, because plant growth speeds up at warmer temperatures.
These seedlings were sprouted using the paper towel method!
The Rapid Rooter should be cut open lengthwise
I do agree that if the temperature is above 80°F, your plant is a lot more likely to get root rot. However, I personally have not found that cool temperatures are adequate to prevent root rot. Even if the temperature is 60°F, you still need lots of bubbles and a “good bacteria” supplement like Hydroguard to prevent root rot in many cases.
Hydro Tips & Hints
There’s good reason to believe that hydro plants would grow better with a cool reservoir. For example, the bad microorganisms that make root rot don’t survive well at lower temperatures. Additionally, water can physically hold more oxygen at lower temperatures, which seems like it would be great for faster plant growth. Because of this, lots of growers will AC their room to 60°F, and/or get a water chiller to cool their water reservoir to a similar temperature.
Just follow these instructions and you’ll end up with healthy, fast-growing plants that germinate in just a few days. It’s pretty much fail proof!
Indoor growing also allows cultivators to take control of time (to a degree, at least). Photoperiod cannabis varieties begin to flower only when the hours of light decrease leading up to autumn. Indoors, growers can change the light cycle to trigger flowering whenever they want. Alternatively, they can extend the growth phase by keeping plants under a veg-specific light cycle.
Towering sativa strains have the potential to surge to heights of 300cm. Growers can limit vertical growth by planting them in small containers, but they won’t produce as good of a yield as strains specifically bred for indoor cultivation.
Are All Weed Strains Suitable for Indoor Grows?
Growing cannabis indoors also helps weed lovers keep their herbal interest to themselves. Indoor grow tents with carbon filters will eliminate the stink and dramatically reduce the chances of facing any penalties.
Growing cannabis indoors has unique advantages and disadvantages. Cultivators have almost complete control over the environment, and can easily regulate light, water, and nutrients. However, space can quickly become an issue, especially when growing strains that like to reach rapidly toward the light source.
She forms a dense, bushy canopy loaded with colas. Left unchecked, she’ll reach a height of 160cm. Growers can keep her even lower to the ground, at around 100cm, through training techniques such as LST and ScrOG.
Our Northern Light strain descends from a premium cutting and features a completely pure indica genetic profile. Her bushy growth and medium size make her an ideal candidate for indoor cultivation.