I don't usually have problems with burnt leaves on plants, but it does happen from time to time. The only times that I have is when the following rain is just light enough to loosen the roof cleaning mix onto the plants leaves. If its a heavy rain then no issues. I was looking into trying Plant Wash made by Softwash Systems but I wanted to get some input from some fellow roof cleaners who have used it firsthand. Does it actually help prevent burnt leaves? From what I have researched it is mainly 30-10-10 fertilizer with some other ingredients. I know that 30-10-10 fertilizer is great for lowering the pH of the soil and making it more acidic which is good because sodium hypochlorite increases pH. I never have issues with plants dying due to soil contamination so I don't see how any type of fertilizer would help protect the leaves from roof mix exposure.
Here we are, way back in 1999, asking this question
http://www.madsci.org/posts/archives/jul99/932670591.Bt.q.html
And, here is the answer
http://www.madsci.org/posts/archives/jul99/932670591.Bt.r.html
The answer then was NO, and the answer now is still NO!
If you think you can simply spray some fertilizer on plants to "provide an additional level of protection" from the SH, you need your head examined.
The best way to protect plants from run off, is to stop the run off from hitting them in the first place (tarps)
Duh
The second best way to protect plants is with plenty of water, before, during, and after the roof cleaning.
Dilution is the solution, to pollution.
To the uneducated and inexperienced, spraying the plants with an acidic fertlizer "sounds good", because SH is very Alkaline, and it "stands to reason" the acidic fertlizer "will neutralize" the roof cleaning chemical, maybe render it more harmless ?
But, this is not how it works, in the real world!
Maybe in a labratory situation, where you know the EXACT strength of the run off, you could apply just the right amount of acid to get to a neutral PH (but then you still have the sodium salt to worry about).
But, in the real world, it is next to impossible to apply just the right amount of the acidic fertlizer, because of about a zillion variables we have little or no control over.
Now, if you apply too much acid fertlizer, it can and will supercharge the SH, and turn it into an oxidizer(plant killer)100 times more powerful then what you started with !!!!!
In fact, back in the old days (working outside with eye protection and respirators), we would acidify the river rock around swimming pools by first spraying it with muriatic acid, and then hit it with a 50/50 SH/Water mix.
This 2 step cleaning method is very very dangerous, (do NOT try this, you can be killed) but trust me, you have never seen even the worst looking river rock whiten up, as it does when the SH is intentionally acidified.
We also add acid to our swimming pools to INCREASE the activity of the chlorine, so tell me, WHY would you ever want to add an Acid of any kind, where SH is dripping, or has dripped ?
As for your answer to the question "Does the Plant Wash from Softwash Systems work", let's let a Softwash Systems Authorized Contractor answer that for us!
http://www.squeegeesquad.com/upload...-tampa-1.pdf?gclid=CNrNzfHP6roCFUkV7AodMVYA6g
If you take the time to READ the PDF Files first paragraph, you can see that they kill plants too (by their own admissions), despite being connected with Softwash Systems, LOL
In fact, they even have a "service truck" they claim, just for replacing plants !
So everyone, now you have your answer to "Does The Plant Wash From Softwash Systems Work"
LOL, "Straight From The Horses Mouth"!