Physan 20 Broad Range Disinfectant, 8-Ounce

I bought this for my sickly orchid, who has some root rot and some fungal infection that bud blasted her last time she flowered, thanks to my beginner level care.I did what any orchid owner would do and learned about what I could do. Copper fungicides in my house? Not a fan, one day I might be more open-minded. So I went with Physan-20. I found the product sealed really well, although you could smell it from outside of the bottle. It's potent, that's for sure. The only issue is if you're like little old me and just have one orchid, you will have to do some math to dilute down. Physan 20 has a website that helps, but I was between two doses for the two issues so I averaged it so I could mix it in a discarded drink container we would never be using to drink from again. Seriously, don't mix this chemical with food containers. It smells strong, it's probably safe, but do you want to really be a case study and/or explain how you poisoned yourself? I didn't think so.I used gloves for the whole process. I soaked the plant's roots in Physan-20 and water as it said my goodness: some gross stuff came off in the water, it was a soupy grey nasty mess (don't freak out and stop treatment if you see this, let that baby soak!). By the time the 20 minutes was up, I drained it and looked at the roots. We only lost a couple of roots, but the Physan really made it easy, made the roots clean and easy to see, I also rinsed the roots to remove any moss. It was easy to drench the substrate and repot my orchid, and even though it's been 24 hours, I'd say she's feeling better already. If she kicks this disease or it just stays under control, she may be a VIP resident of the sick bay for life.Either way, if you're buying this for at-home use, be certain your measurements are precise. My only wish is that it worked on all my plants, not just some of them. If you're trying to save an orchid, please do. They are too often discarded when they can be healed.

Number one, in the winter I spray monthly with a fungal preventative. My orchid greenhouse must have it or I lose orchids. Also; here in the south, the warm summers bring black mold everywhere hoses leak or water stands. This can be used to not only kill existing black mold but it will prevent it for awhile. Please use an N95 mask over your mouth and nose when spraying as an aerosol it's not good for human lungs. Yes your N95 mask should be good. And we all have them now. Also; wear safety glasses and wash your skin if you get it on you. No it's not caustic but it's not good for you either. Just keep in mind that every so often you need to rotate the chemicals like this that you use. Been using it for about decade now regularly. Five Stars

I wick water my african violets and was having a major problem with algae. This product has taken care of that.

Very effective.

Great job

Physan 20 is a odorless, and colorless liquid. It is a powerful cleaner and disinfectant when used properly.The manufacturer recommends you only use 1ml for every 10 gallons, and THEY ARE SERIOUS! Using too much Physan 20 can be toxic and deadly for any plants or fishes living in your pond, aquarium or reservoir. And if you let it sit on you skin, it can cause burns and rashes. DO NOT MiX THIS PRODUCT WITH BLEACH OR AMMONIA.I've used Physan 20 twice so far to clean my hydroponic reservoir, and each time it leaves the reservoir extremely clean and the water "crystal clear". But you have to be very careful when using this product -- before introducing water to your plants you must wait 48 - 72 hours for the chemicals in Physan 20 to decay. Once the chemicals decay, Physan 20 turns into nitrogen, which is a major nutrient for plant growth.I love Physan 20, its a great fungicide, pesticide and sterilizer. This industrial strength product cleans what bleach leaves behind, and i highly recommend it.Thanks,C. Cole PhD

Works perfect for what I need it for. I grow african violets and use this in the water since I use the wicking method. Had seen other growers using Physan to prevent algae growth. Constantly cleaning the algae out of the water containers was a chore since I have 50 plus AVs all of which I use the wicking method of watering. It has saved alot of work and has not effected the plants at all whatsoever. (No reactions noticed with fertilizers either.) My violets are still happy and blooming up a storm! And I am enjoying my hobby even more since I am not cleaning containers every time I turn around. :)

I read about this product trying to find a solution to my carnivorous plants being overrun by algae. After a really wet winter/early spring, algae was taking over. The sundews, pitcher plants and fly traps have all tolerated it very well. Most of my bladderworts didn't fare as well, but a few survived. The damage may have been my mixing ratio or something else, so I'm not lowering the rating. It's not nearly as harmful or dangerous as most other products and the results are incredible. I just ordered more and plan to continue using this product.