Question 1

How would you measure this?  I only have one plant that I would need to use it for right now.  I wanted to soak bark in it for one normal sized Phal plant.  1 ml per 10 gallons of water?  I wouldn't use anywhere near 10 gallons! So how am I supposed to measure THAT?  Maybe it's way too concentrated to attempt using.

Accepted Answer

An easy way to measure out 1 ml/10 gal or 1/10 (.1) ml/gal is to use an eye dropper. Using water, find out how many drops are in 1 ml. Then divide by 10.But if I may ask, why are you using Physan 20 (P20) on your plant? Plant roots do not like P20. I have tried P20 in a hydroponic system and the evidence was very clear, the roots don't like it. If you have Pythian or some other fungus, Actinovate Fungicide works great. It is a bit pricey but worth it. For algae use an algaecide.

Question 2

Can this be used to sanitize ro water purifiers?  seems to have the same ingredients as the sani-system sachets.

Accepted Answer

I am not sure I use it in my outside fountain to keep it clear.

Question 3

Does Physan need to be kept cool? Mine was accidentally left out in the hot sun for a few days. I’m hoping it hasn’t lost its disinfecting power.

Accepted Answer

I have left my bottle out in the Arizona temperature and it never seems to have effected the product.

Question 4

Is Physan 20 the same thing as Physan 20 Fungicide? As a first time buyer of Physan 20, I'm a bit confused the various sellers naming inconsistencies.

Accepted Answer

Yes, Physan 20 is a fungicide.  I use it to prevent algae.  I suppose some sellers are just more descriptive with their titles than others.  However, they are the same.

ASIN	B000OWLD8C
Best Sellers Rank	#293,679 in Health & Household ( See Top 100 in Health & Household ) #257 in Disinfectant Sprays & Liquids
Brand Name	Maril Products
Customer Reviews	4.6 4.6 out of 5 stars (472)
Item Form	Liquid,Spray
Item Volume	8 fluid ounces
Item Weight	0.27 kg
Manufacturer	Hydrofarm
Material Features	Biodegradable
Model Number	PSPH8
Number of Items	1
Part Number	PSPH8
Scent	Fresh
Size	1 Count (Pack of 1)
Special Features	Hospital Grade
Specific Uses For Product	All Purpose
UPC	722540001070
Unit Count	1 Count

Physan 20 Broad Range Disinfectant, 8-Ounce

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