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Old 12/27/2007, 09:52 AM   #1
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Join Date: Dec 2005
Location: El Dorado Hills, CA
Posts: 317
Controller probes, what do they all do?

Please feel free to throw down links that I can go read for hours. I'm guessing some of these are quite a long explination.

So my local club is getting together with an LFS to buy controllers. I'm about to upgrade and don't want to miss a deal. I thought I knew basically what the controller does until I looked at the controller comparison chart, and saw several different kinds of probes. Can someone help me out?

pH - I've got a small tank lightly stocked and have never had an issue with pH. I would assume this would start the kalk or ozone dosing? What in your tank would cause ph to fluctuate? Why would you need two? (Nothing good happens fast, just set the controller to check once an hour or something?)

ORD/ReDox - (oxidation reduction potential) I found a link to a Reefkeeping article. Is this another thing that is generally agreed that there is no reason to target?

DO (Dissolved Oxygen) - Anyone know why a normal reef tank would need this? I found a thread about breeders, but no one could see a real point in a standard reef tank.

Conductivity - How is this different from a salinity probe?

Osmolator - (not really a controller, but while I'm here) is that a long winded name for auto top off?

Is there anything that can check calcium, magnesium, and alk? Am I reading everything wrong or is there generally only three things (temp, salt, and pH) measured by controllers in 6 different ways?

As always...thank you for putting up with the newb...

Last edited by JJ4417; 12/27/2007 at 10:21 AM.
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Old 12/27/2007, 04:22 PM   #2
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