If your plants are sitting in old water that’s getting light (from the sun or otherwise), their roots are connected to a breeding ground for unwelcome organisms. Root rot is a major problem to look out for in DWC many factors can cause it to show up. The most common are: Heat – A warm reservoir makes it easier for bacteria to reproduce. In fact, keeping a cool reservoir makes for an environment in which harmful bacteria/fungi/etc. Light leaks – Light in your reservoir equates to a population boom for some of the smaller, unwanted populations living.
Lack of oxygen in the water – When you remove the air and agitation from your reservoir water, it’s party time! Agitating young roots – Young roots need time to build up their defenses. Moving them not only weakens them, but it potentially exposes them to new pathogens. Decaying matter in the reservoir – Old bits of dead leaves can be the start of something bad. Make sure you fish any plant matter out of your reservoir when you see it. Your cannabis plant has started drooping, leaves are getting sick, and roots are brown, twisted, smelly and/or slimy. These are all signs you have cannabis root rot 🙁 When a plant is wilting or drooping, whether it is in soil, coco or hydro, it is almost always a sign that’s something is going on at the roots.
The wilting is often soon followed by other symptoms to the leaves, especially burning, brown spots, nutrient deficiencies, spotting, and other unusual leaf symptoms. Root rot can cause a wide range of symptoms, because without the roots the plant is shutting down! Plants with root rot often start drinking less water. If you notice symptoms in your cannabis plant, make sure to take precautions to stop root rot from getting worse! Some brown roots may eventually turn white again after the root rot is gone, but it’s important to note that damage is permanent on the leaves. You need to watch the roots and the new leaf growth for signs of root rot recovery. Root rot mostly affects marijuana plants in hydroponic systems, but roots can also get pathogens as a result of over watering your plants in soil or other medium. Basically, anytime the roots are sitting in wet conditions for too long without any oxygen, they are at risk of developing root rot. Cannabis plants with root rot almost always appear overwatered or droopy (sometimes plants wilt overnight!) Brown, slimy or smelly roots Plant leaves often start turning yellow or white Leaves may start dying and falling off rapidly Oftentimes you’ll see what appears to be a random mix of nutrient deficiencies on the leaves – this is due to the fact that the plant can’t absorb nutrients properly at the roots even if they’re there Plants may drink much less water than usual. Now that you know what root rot looks like and how to get it, it’s time for cannabis root rot solutions! Solution: What to Do About Marijuana Root Rot, Algae Growth & Slime in the Reservoir. It can be tough to get rid of root rot and many growers feel it’s easier to just scrap the plant and start over. However, if you’re growing in the same spot you’re likely to get it again unless you find a true solution, and there are proven techniques that will cure your plant of root rot problems! In order to get rid of root rot successfully, you need to take a two-pronged approach. You will need to… Treat the plant’s root directly with something that will help protect them against root rot Ch ange the plant’s environment so that root rot no longer has a good place to grow. Go through the below list and make sure you’re covering all your bases to get rid of root rot permanently and prevent a re-occurrence. It’s also important to note that affected roots will likely never recover, just like how discolored leaves on the plant will never recover. What you’re looking for is new, healthy white root growth coming out of the old sick roots. Learn how to prevent and treat cannabis root rot… 1.) Add Beneficial Root Bacteria – Crucial! Some people (like me) add beneficial bacteria to their water to help prevent and treat root-related plant diseases and help make nutrients available to the plant. Some of the formulas available are Hydroguard, VooDoo Juice, Great White, and Rooters. Most of these can be used with both hydro and soil grows.
I personally recommend Hydroguard because I’ve used it successfully to treat root rot in hydro, and I’ve also seen it work for many other hydroponic cannabis growers, too! It’s pretty inexpensive, and concentrated enough that a single small bottle can last throughout your grow.
The “secret sauce” in Hydroguard is a specific type of bacteria called Bacillus amyloliquefaciens . It survives in hydroponic reservoirs better than other types of Bacillus bacteria and fights many root ailments including different types of fungi, bacteria, and oomycotes. It not only gets rid of and prevents root rot, but there’s some evidence Bacillus a.