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Old 11-22-2012, 07:19 PM   #7
dmagerl
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If you're doing Excel directly on plants that are out of water, I'd use a 10:1 water/excel mixture. Anything more and you stand the risk of killing the plant as well as the algae..

I should say 9 parts water, 1 part excel. Is that 9:1 or 10:1?

I've used 10:1 and it takes a few days but it does kill the algae.
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