Bira83
Roundtable Host 2009
Looks like you missed some of the algae? Generally it will disappear within 15-20 minutes of treating it but it can take a little longer.
If you're sure you didn't miss anything then just wait till it rains a few times and then go check it.
It wasn't missed I think it was just thick on there. I've heard that rain will wash that away but I'm not sure if it will. You can't see it from the ground. I normally spot treat anything that is left but I guess I'll find out when it rains.
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