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  • Hydrofarm PSPH8 Physan 20 Broad Range Disinfectant, 8-Ounce
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Hydrofarm PSPH8 Physan 20 Broad Range Disinfectant, 8-Ounce


Price: $12.47 & FREE Shipping on orders over $35. Details
In Stock.
Ships from and sold by Amazon.com. Gift-wrap available.
  • EPA approved for use directly on plants
  • Broad spectrum disinfectant
  • Environmentally friendly
  • Pleasant odor
  • Will not discolor skin
9 new from $5.94

Father's Day Gifts in Lawn & Garden
$12.47 & FREE Shipping on orders over $35. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

Hydrofarm PSPH8 Physan 20 Broad Range Disinfectant, 8-Ounce + Dyna-Gro K-l-n Rooting Concentrate Kln-008 0.009-0.011-0.006, 8-Ounce
Price for both: $21.75

Buy the selected items together

Product Description

This PHYSAN 20 is a broad range disinfectant, fungicide, virucide, and algaecide which effectively controls a wide variety of pathogens on hard surfaces and plants. Its applications include greenhouses, hard surfaces, lawn and turfgrass, seedlings and cut flowers, decorative fountains, pools and birdbaths, and plants. It is an EPA approved concentrate formulated with unique germicidal agents to provide overall protection for your plants and greenhouses. It poses no human or environmental risk when it is used at recommended use levels and according to label instructions. PHYSAN 20 controls disease spreading organisms which can be carried from plant to plant by using contaminated pots, flats, seed beds, soil, tools and human hands. Available in 8-ounce.

Product Details

  • Product Dimensions: 2 x 2 x 6.3 inches
  • Shipping Weight: 9.6 ounces (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item can be shipped to select countries outside of the U.S. Learn More
  • Origin: USA
  • ASIN: B000OWLD8C
  • Item model number: PSPH8
  • Average Customer Review: 4.5 out of 5 stars  See all reviews (15 customer reviews)
  • Amazon Best Sellers Rank: #32,348 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden)

Customer Questions & Answers

Customer Reviews

4.5 out of 5 stars
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Most Helpful Customer Reviews

3 of 3 people found the following review helpful By C. Cole on March 16, 2013
Verified Purchase
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
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2 of 2 people found the following review helpful By Steven B. on April 19, 2013
Verified Purchase
If you are in hydro, you will need this, whether you run sterile or need to fight back a problem, This is the king of them all. (3 drops/10gal)
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2 of 2 people found the following review helpful By Joe on February 7, 2013
Verified Purchase
I have a hydroponic system and Physan 20 has controlled the pythium in the system. Physan 20 is non-systemic making it safe for consumables.
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2 of 2 people found the following review helpful By artrescue on December 10, 2013
Verified Purchase
Good product, works well on my bathroom walls, protects bath room from black spots. Use it with caution, use rubber gloves
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2 of 2 people found the following review helpful By Masaki Takeda on April 17, 2013
Verified Purchase
Product does what it says. It is a very, very, very, very efficiant disinectant pet does not harm plant tissue.
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1 of 1 people found the following review helpful By Will Donaldson on August 15, 2014
Verified Purchase
It works. Doesn't hurt Sarracenia or Nepenthes, even seedlings, when used sparingly and only as needed.

Don't get this on you!!

Use gloves and a honestly you should probably wear goggles and a mask if doing any kind of large-scale spray application. If you get any on your skin wash the affected area immediately.

I'm not kidding this stuff is mean.
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1 of 1 people found the following review helpful By E. Hardoon on September 14, 2014
Verified Purchase
My orchids had some type of mold growing on them - snow mold - and 3 treatments of this took care of it. My orchids are still growing and alive 2 months later without the mold!
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1 of 1 people found the following review helpful By Prometheus on June 18, 2013
Verified Purchase
I don't care what the manufacturer says, this stuff kills cannabis plants if they uptake it, even in minuscule residual doses! Perhaps this stuff is good for orchids, but not for cannabis. Killed an entire batch of healthy snips in an ez clone machine within a couple days.
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Hydrofarm PSPH8 Physan 20 Broad Range Disinfectant, 8-Ounce
This item: Hydrofarm PSPH8 Physan 20 Broad Range Disinfectant, 8-Ounce
Price: $12.47
Ships from and sold by Amazon.com