xtsho
Well-Known Member
If you're going to pay for CS just buy the stuff you need to make it yourself. It's really easy. Most of those health products people buy don't end up working and are a waste of money.
Or just buy the stuff to make STS as @growerNshower said. Spray a couple times and call it done.
Or just buy the stuff to make STS as @growerNshower said. Spray a couple times and call it done.
They send the silver nitrate and sodium thiosulfate in separate solutions that you mix together when you get it. Silver nitrate solution will last indefinitely but it is light sensitive. The sodium thiosulfate solution will last at least 18 months.Colloidal silver actually lasts for ages and I've been making my own for about 7 years tho never used it on plants. I got the chemicals for making STS tho had to make my own silver nitrate from a .9999 silver coin from the post office and boiling concentrated nitric acid. Took forever to find the sodium thiosulphate but found a chem supply place in Ontario and got 500g for $22. $69 for Purolator to get it to me as it's shipped as a hazardous material but have enough for 10 lifetimes now.
STS has a pretty short shelf life and should be refrigerated after the final mixing up so I wonder about the stuff they sell online. Supposedly only good for a month or two if kept cold.