Flamedodger Posted January 5, 2021 Share Posted January 5, 2021 I’ve noticed a few times that I get dead spots when checking both pH and EC. If I stir the nutes I get steady readings, I have an air stone in there as well, so was a bit surprised. I calibrate my bluelab pH meter every month, so not that. Does anyone use electric stirrers? If they’re worth using, I might knock something up with some old pc fans and some magnets. I’ve seen it done on YouTube. Link to comment Share on other sites More sharing options...
Shumroom Posted January 5, 2021 Share Posted January 5, 2021 I've seen people use pumps to keep reservoirs mixing instead of airstones, but I think you have to watch res temp as pump will usually increase the temperature. Atb Link to comment Share on other sites More sharing options...
Flamedodger Posted January 5, 2021 Author Share Posted January 5, 2021 Just now, Shumroom said: I've seen people use pumps to keep reservoirs mixing instead of airstones, but I think you have to watch res temp as pump will usually increase the temperature. Atb Cheers, makes sense. I’ve got a very small usb pump which I bought in error, that would do the trick, it might be quieter than the air stone as well 1 Link to comment Share on other sites More sharing options...
tokenroll Posted January 5, 2021 Share Posted January 5, 2021 Water pump set to come on for 10 minutes before the auto feeding is more than ample. 2 Link to comment Share on other sites More sharing options...
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