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Old 05-03-2010, 05:21 AM
GpsFrontier GpsFrontier is offline
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Join Date: Mar 2009
Location: Lake Havasu AZ.
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I think your referring to dumping 50% of the nutrients, then replacing it with the same amount of fresh nutrient solution. Not sure if that's weekly, or every other week. But every gardener seems to have there own opinions. I would suggest for the new gardener to replace 100% of the nutrients every week (or two) to start with, and observe the plants growth. Then experiment with different nutrient changing schedules. That way you will have a good idea of what to look for, and if you notice singes of the plant growth slowing down, or nutrient deficiency, then change it more frequently. I don't think the type of system matters much. It's more about how big the plants are, how big the nutrient reservoir is, and how fast the nutrients are being depleted from the nutrient solution that makes the biggest difference. But observation is going to be your best indicator, so observe them every day.
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