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Sharkstar
Odd paving issue. We had some paving done a while ago and it was a good job. This year the slabs have been turning green. This isn’t overly unusual but the speed of the green appearing has been. I power washed the slabs and the green appeared back within a few weeks. It is oddly patchy and I cannot work what is doing it and why it is patchy. The new paving is now starting to be affected which is very annoying. The pics should show the new and old paving.
I have hypochlorite and have used it in the past but it’s the speed of the green appearing that has me confused. Any ideas why this is happening and any ideas how to stop it?
I’m not overly keen on using hypochlorite regularly as we have a cat.