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WWWD
10-20-2006, 06:39 AM
I have a new ORP meter and was wondering what kind of numbers I should be looking at. Can anyone let me know what their numbers are so I can get a feeling of where I should be?

Thanks
Chin_Lee
10-20-2006, 06:57 AM
390-400 is good
WWWD
10-20-2006, 07:27 AM
390-400 is good

So if my numbers are around 530, is that good or bad? I guess I need to do some research is higher good or bad.
Jaws
10-20-2006, 03:17 PM
Actually there's probably something funny there. If your ORP was actually 530 everything in your tank would be dead. Your water would be crystal clear though.
WWWD
10-20-2006, 03:20 PM
Actually there's probably something funny there. If your ORP was actually 530 everything in your tank would be dead. Your water would be crystal clear though.

Ha.. figures, I read last night that probe needs several days to break in. I guess I will have to wait awhile to fugure out whats going on. My water can't be anywhere near as high as it reads, I don't even use a skimmer.
Jaws
10-20-2006, 03:33 PM
Mine took almost a month to break in before I started trusting it. Make sure you use a toothbrush on the probe at least once a week. That will give you a more accurate reading. It even takes a couple hours to adjust after using the toothbrush.
WWWD
10-20-2006, 03:42 PM
Mine took almost a month to break in before I started trusting it. Make sure you use a toothbrush on the probe at least once a week. That will give you a more accurate reading. It even takes a couple hours to adjust after using the toothbrush.

Wow, ok sensitive stuff. Where is the best place to put the probe?
Jaws
10-20-2006, 03:53 PM
I put mine in between one of the baffles in my sump. I think they said put it in a moderate flow area instead of low flow. Make sure you don't put any other probes within 6 inches of it like a pH probe or something.
michika
10-20-2006, 07:32 PM
What is ORP? Or what does it stand for?
christyf5
10-20-2006, 07:44 PM
ORP = Oxidative Reductive Potential

A little light reading (http://www.reefkeeping.com/issues/2003-12/rhf/feature/index.php) :wink:
WWWD
10-20-2006, 08:27 PM
Turns out my tanks isn't grounded properly so I am getting erratic readings. ORP is very sensitive to power, I have plugged a grounding probe in and see if that stabilizes the numbers.
michika
10-20-2006, 08:28 PM
Thank you!

Well this covers my quota for new things to learn today!