Sensor sample reservoir needed when pH regulation code runs every 5 minutes?

If the pH regulation code runs every 5 minutes, I’d imagine that is plenty of time for any solution to mix throughout the system (my setup is only 7 gallons).

If so, would the sensor sample reservoir be unnecessary? If anything, isn’t it okay to increase the code running period to, say, 10 minutes in order to make sure that the solutions are thoroughly mixed?

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The sample reservoir serves an even more important purpose preventing the sensors from becoming dry when the reservoir level drops.

10 minutes would be fine for a 7 gallon reservoir, so long as the pump can adequately circulate the water in that time.

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