Hey Myka,
I have a HM Digital dual meter on my RO system. You can't calibrate, and I never thought about it. But now I am wondering what it really is, so at least I know. What calibration liquid would you recommend?
I just changed my filters 2-3 weeks ago, and it is reading 0ppm, but as you stated, is it really that. You got me curious. As my filters are new, I am not worried, just curious.
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Setup: 180G DT, 105G Refuge (approx. 300lbs LR, 150lbs Aragonite)
Hardware: Super Reef Octopus SSS-3000, Tunze ATO, Mag 18 return, 2x MP40W, 2X Koralia 4's Wavemaker
Lighting: 5ft Hamilton Belize Sun (2x250W MH, 2X80W T5HO)
Type of Aquarium: mixed reef (SPS & LPS) with fish
Dosing: Mg, Ca, Alk
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