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Message: [QUOTE="Meyer Jordan, post: 295747, member: 7131"] This is not really a workable configuration. Pumps are designed to [U][I][B]push[/B][/I][/U] water, not to [U][I][B]pull[/B][/I][/U] it. By placing the pump in the final stage of filtration, it is being set up to experience very frequent cavitation due to flow through the filter being reduced as filter media clogs. The use of a pump with a very low flow rating would work, but the desired pond turn-over rate of 1.5 - 2 times/hour would be far from realized. This, in turn, would lead to water quality issues. [/QUOTE]