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Old 03-10-2006, 09:37 AM
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well this is a hard topic because you cant goto the desert and watch..................well find a reliable source for each cactus and see how much water they absorb. If it says it absorbs 2 gallons every 2 days convert it to 1 gallons a day or to 7 gallons a week or what you need 14gallons and compare the two.
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