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dwc weed grow

Dwc weed grow

Advanced top-feeding/dripping systems continuously trickle water over the young plant’s roots. After the plants’ roots have grown enough, some growers switch back to the original DWC set-up.

We recommend using organic nutrients for the best results. If you’re a beginner, consider investing in complete grow systems that include solutions for every stage of growth. Some of the most popular ready-made nutrient options include General Hydroponics’ Flora Grow Series or FoxFarm’s Trio formula.

Cannabis DWC systems range in size. Some growers may place multiple plants in a single reservoir, while others may pump nutrients and oxygen into several small DWC reservoirs that hold one plant each.


If you want to learn about more ways to grow in soil and soilless systems, enroll in Cannabis Training University. CTU offers jam-packed courses on cannabis cultivation, cannabis law, cannabis medicine, cannabis extraction, cannabis cooking, and so much more.

CTU gives you plenty of access time to the course material throughout the growing season and beyond. Become a cannabis growing expert today!

What Is Recirculating Deep Water Culture?

When the plants are young, their roots won’t be long enough to reach the bottom of your reservoir. During this initial period of growth, it’s important to water your plants from the top.

In addition, the space between the pellets provides optimal airflow to prevent root rot when there’s not enough oxygen. Finally, hydroton exchanges cations (positive ions) with plants to improve nutrient uptake and pH regulation.

Dwc weed grow

    Start soaking your airstone.

Why flower so early? To account for the flowering stretch! These numbers aren’t set in stone, but some cannabis plants will double or (rarely) even triple in height after changing the light schedule to 12/12.

You can then use small amounts of pH up/down to adjust your water to the right level, but don’t be afraid to leave the pH within a range. Some nutrients are better absorbed by the roots at a lower pH, while other nutrients need a higher pH to be properly absorbed by the plant’s roots.

Bubbleponics Materials – Supply List

These powerful lights are pretty much seen as the golden standard for indoor growing lights. They will definitely give your plants what they need to grow huge, but they also make a lot of heat and can dramatically raise your energy bill depending on where you live.

Which Nutrients to Use:
You can use any nutrients you prefer as long as they’re formulated for hydroponic systems (as opposed to soil) and are also specifically made for plants that have a vegetative and flowering stage (if you see tomatoes on the label, you’re golden!).

Grow Lights:

Reservoir smells bad, roots are brown, weird stuff floating in reservoir water:
You may have root rot. If you have brown roots, cut off the brown parts. Replace tank water and add SM90 or Hydroguard to help fight growth. If you’ve been using SM90, don’t switch to Hydroguard or vice versa. Reportedly, SM90 kills all bacteria, so using these two products together is counter-intuitive since the SM90 will kill the beneficial bacteria too.

2700K will better for flowering, and a place like Home Depot will have CFLs in that color range (they’re usually labeled as ‘soft white’ colored). If you went for HPS/MH, now’s the time for that HPS bulb.