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They are way more accurate than liquid tests IMO, as long as you calibrate them correctly. They are accurate to 1/100th of a ph point.

I don't think the probes are accurate to 1/100th of a point but they give a reading to 1/100th of a point.

Troy, have you any experience with them? Like I say I have one that needs a new probe, I'm just not sure if it's all it's cracked up to be now. I did rely on it as a constant monitor in my old reef and would check my pH daily I'd calibrate it about once a month or so (4-6 Weeks) but I never checked it against a titration kit. I think I'll just stick with the titration kits for now and spend the $50 on something cool.

Doug

Sean,
I can't seem to keep my alk down. Perhaps adding some of my water to your system will raise your levels. Bring over a big honkin' bucket and I'll fill it for ya.
Greg

Haha, well that seems like a lot of work :biggrin: Ill stick with the backing soda, its seems 4 tbsp brings it up 1dkh. so im slowly working my way up and trying not to mess with the PH to much. Now if i could just kill those pesky apatasia.

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Troy Said, Your probly right about that, they are still good because you can see the gradual rise and fall of your ph with more accuracy.