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- Mar 26, 2018
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I have the AIO Max E260 with the upgrade sump in the cabinet. Where is the best place to put the Tunze ATO sensor? I have tried the return pump section in the upgrade sump and have tried the right hand side of the sump on the tank itself where the circulating pump is. The sensor would go off every 3-4 minutes. That's not good. Ideas please.