I am currently growing 3 plants from seed, in soil [in those water dispensers gallons, cut in half // which are somehow blue/transparent]. The soil was bought, in a closed bag, which I think makes it clean and pure. Now, 9 days after my plants have germinated, one of them is yellow and stopped growing, and in its soil, there is an invasion of white things that looked like roots first, but now clearly appear like being some kind of fungus. They are extending to the side of the plastic container ad are very numerous. Some information over the web says that fungi are good for the soil, braking nutrients and processing roots' exhalation. Other says it is bad... Has anyone ever experienced such stuff?
Water more frequently using less water. Reduce humidity. Fungus likes about 60% humidity or more. Increase heat, to speed up evaporation of water. Water logging is one of the reasons why smaller pots are used for smaller plants. A large pot with a small plant will retain alot of moisture in the soil that the plant can't use fast enough. Which will cause problems such as fungus and eventually root rot. If this is your situation, you can still use your large pots for your small plants, just water only as much as the plants need. Don't saturate the soil. Give them only enough water for one or 2 days. If you aren't sure if they need water or not, don't rely on how dry the soil appears to be. Listen to the plants. They will tell you when they are thirsty, because they will get droopy and look 'sad'. After a while you will know when they need to be fed and can catch them just before they start to get sad. If you bought gardening soil from the local store, it's not exactly suitable for growing MJ without a bit of preparation. Most garden soil is designed for outdoor use and retains alot more moisture than is desirable for MJ. You can make regular potting soil more suitable by adding drainage medium such as perlite or bark chips or gravel, etc. Which will help to reduce the soils ability to retain water and increase it's ability to retain oxygen/air. No, bagged potting soil is not always sterile. Usually it is not. You can even get mites and aphids and all kinds of nasties from the wrong brands of soil. Some fungi can be good, most are not. To be safe, no fungus is good. Fungus can also be toxic to breath. If you want to increase aeration in your soil and help the breakdown of nutrients, use worms. They won't harm your plants and are easily controlled. To get rid of the fungus, just keep your soil dryer, it should clear up.
Sorry, your plants are still very small. It wouldn't be wise to let them get droopy until they have 3 pointed leaves. Even then, they will be growing quite rapidly, so you will have to pay attention that they don't wither. For 2-week old plants, you should prolly be giving them roughly 1/4 cup of water per day, maybe less.
Often prefertilised soils can be to strong for seedlings it can cause yellowing and leaves growing curled under. If you don't over water they normally get through it and start looking healthier as they get older. If your pots are transparent cover the sides with something. Try putting an inch of pearlite on top of your soil. Don't know what your describing within the soil it sounds like the roots to me. Adding a weak solution of maxicrop seaweed can help the roots and increase the plants overall health. Dont add to much and certainly don't add any fertiliser. You don't want to use any sort of transparent pots if this is the case either transplant or as mentioned earlier device some method of blacking out the sides of the pots. Some plants are destined not to grow whatever you do due to poor geneticts but don't worry at the first sign of evry little deformity if you dont over do things its surprising what they can get through.
I had the same problem and aired the room several times a day to get rid of the moisture and sprayed with sulpher once a day for 10 days. Took care of my problem.
Sounds like mycorraza (i know i spelled it wrong)... that would be a good fungus. Sounds like a plant medium that you planted in. Did you make holes in the containers? Roots need to breathe. Don't overwater. Stick your finger in the soil, as deep as you can go. If it comes out with moisture and a little dirt sticking on your finger, don't water. This type plant loves to have its roots waterstressed. It creates more plant hormones (the same as buffoonman applies with maxicrop). The root tips manufacture those hormones and need oxygen to do so. If you don't let the roots dry out, literally to the point where the plant tips start to droop around 4 in the afternoon outside, then you won't maximize root manufacture. Stick some calcium carbonate in those finger holes and that way you won't have to worry about calcium needs later on. Four or five calcium holes, 2, 4 and 6 inches around the plant will give you a plant you won't ever forget.... Happy Growing!
