thanks Steven, it seems from your comments that during the rainy season everything will be so diluted that the chemicals will be less damaging.  i am still concerned about the rest of the year - we have a six month dry spell here where there is no rain water.

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thanks Steven, it seems from your comments that during the rainy season everything will be so diluted that the chemicals will be less damaging.  i am still concerned about the rest of the year - we have a six month dry spell here where there is no rain water.