Quote:
Originally Posted by Tom Barr
KH ref solution gets around that, but the drop checker introduces others, slow response time, issues for some with using a precise pH color or measured value for pH, I use a pH probe and encase it in special membrane and KH ref solution to get around that.
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I agree, the colour change is a little slow on the drop checker.
I've never come across a probe membrane before. Is this a commercial offering and would you have a link to it?
I have an American Marine Pinpoint pH monitor in the tank. Not sure how accurate these are but it would be more useful to monitor this way.
Brian.
515L tank running on a 90L sump, CO2, 3 70w 5200k MHs, Aqua Medic Volcanit substrate, EI ferts
Juwel Trigon 190L corner tank, Dennerle Deponit substrate, 70w 5200k MH, planted, CO2 & EI ferts.
45L & 70L tanks, non- CO2, EI 'light' using Excel