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Page 8 of 47
Before plugging in the circulating pump, remember that it DOES matter which direction water
flows through the EVO. The pH sensor, like all such devices, reacts slowly when driven with
strong acids or alkalis. We make sure this doesn’t happen by pumping water from Left to Right,
since the sensor is on the left.
Fire up the circulating pump that came with your EVO and make sure nothing leaks and
everything is clean and secured. Pump pressure comes in on the left, return hose to your res on the
right. Make sure there is nothing else in the return hose (like a chiller) that could cause
backpressure on the EVO.
So:
Your GroBot Evo should now be powered up, wireless network running, probes installed, with
water circulating through it with no leaks.
Take a look at the next section to see how it all works!