ORP Redox Potential ???

Billybeau1 said:
Jason, I suspect there is something wrong with your ORP meter or probe. I really doubt your ORP is really holding steady below 200 mv.

Have you tried a calibration fluid to check your equipment ?

They make a 400 mv solution to check the accuracy of the probe. You may want to pick some up. :)
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I'll be picking some up. I didn't originally as this probe can't callibrate for ORP but it certainly will be nice to check it against a solution to see if it is accurate or how off it might be.

tmz said:
Jason. Is that orp probe new? They can take a couple of weeks to climb up to a truer reading.
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It was brand new 3 months ago and has been reading pretty steadily and increased as expected when I started the ozone generator and decreased as expected when the ozone generator stopped. But people keep commenting how rediculously low my ORP values are even with ozone going. :confused: So, I'll definitely check against a calibration solution.
 
sjames said:
Im sold, where do i get some of that fresh ozone? the stuff i was using must have been stale.
Click to expand...

Go to a nice flat area and stick up a long metal rod in a lighting storm. Nice fresh natural ozone! You'll never foget that sweet crispy smell.
 
jason2459 said:
Go to a nice flat area and stick up a long metal rod in a lighting storm. Nice fresh natural ozone! You'll never foget that sweet crispy smell.
Click to expand...

Exactly. :lol:

While you can not calibrate an ORP probe, the calibration solution should tell you if it is registering properly.

They probably shouldn't call it calibration fluid, but reference solution. :)
 
seafloor09 said:
So I don't agree with your regurgitated data I'm an ozone dealer, give me a break.

Keep your head in the sand just don't ask others to do the same or follow your incorrect analysis of ozone.
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Dan,

You would be doing yourself a big favor by paying attention to what Randy and Boomer write on the subject. They are bringing actual scientific fact to the discussion. That source your obviously relying on is very flawed, to the point of being absolute junk. The author of that article is writing on the principle of "If you can't dazzle them with your brilliance, baffle them with your bull feces". Randy and Boomer will give you the straight facts, not the bull feces ;)
 
Thx for clearing the whole ORP thing up Randy and Boomer. I found myself looking at ORP products over the last couple weeks but this thread makes seem like it would'nt benefit my reefs. I especially liked the two ways you guys used to dispell false/unuseful information from an ozone dealer that found out how to cut/paste information that is not applicable to our hobby. I love this forum, I sometimes think it's the only forum left that contains real science, not garbage.
 
Randy Holmes-Farley said:
Tanks with refugia and sand/mud often seem to run lower in ORP than bare bottom/big skimmer tanks. Proponents of the latter types take this as evidence that those systems are better. I disagree somewhat, as I really don't think that absolute ORP values mean much. If macroalgae area releasing some organics into the water that keep ORP down, is that a concern? Maybe, but it is not obviously the case.

.
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A little confused here(but showing signs of positive growth from totally confused:D)
I thought macro algae such as cheato were up takers of organics and released oxygen through photosynthesis.
Would this not raise the ORP?

BTW
Great analogy in explaining ORP as a battlefield
 
Randy Holmes-Farley said:
Thanks.

Most algae do not take up much organic material, and are, in fact, net producers of organics in the water. They do take up nitrogen and phosphorus and produce O2 and other oxidizing species.

Here's a study suggesting that algae are one of the big producers of organics in seawater:

http://www.int-res.com/abstracts/meps/v370/p33-44/
Click to expand...

Thanks
I guess if one relies heavily on refugiums for nitrate and phosphate reduction/tank feedings then they better be running a good protein skimmer and carbon too
 
Hello there Boomer and Randy

Randy, great explanation, me being both an aquarist and combat Veteran understood it perfectly (I think)

Anyway, I believe my reef is probably the longest tank running ozone continuousely. I have been running ozone since about 1973 or so and not being a scientist, I can't state one way or the other if it helps, or if it does, how much. I can say though that I don't seem to have many of the problems many people have. I also don't run the water over carbon but a 4' algae trough instead.
I never ran ozone to kill bacteria or paracites as I feel it would not do that and there is no need to try to kill bacteria in a reef, I even add it from the sea all the time and I try to cultivate it if anything.
My reef is 100 gallons and I run 100mg/hr of ozone into my homemade venturi 5' skimmer.
Many of my fish are spawning and always have, the eggs hatch and the fry are eaten. Even my hermit crabs are spawning. In my tank anyway, with over 30 years of continuous ozone injection with no controller and little water changes there does not seem to be any problems. Maybe it would be better with no ozone but I have no way to measure that.
I do feel, and it is only a supposition on my part, that ozone can help with the organic chemicals that corals exude to repel other corals. I don't think we could measure this and I think it is an important, often overlooked aspect of this hobby but of course Randy would know much more of the chemistry of this than I would.
My ORP reading today is 339, you can see what it was a while ago in the picture, I think it reads 444. As Randy said, that changes from day to day and even sometimes from minute to minute.

skimmer002.jpg
 
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Paul B said:
Hello there Boomer and Randy

Randy, great explanation, me being both an aquarist and combat Veteran understood it perfectly (I think)

Anyway, I believe my reef is probably the longest tank running ozone continuousely. I have been running ozone since about 1973 or so and not being a scientist, I can't state one way or the other if it helps, or if it does, how much. I can say though that I don't seem to have many of the problems many people have. I also don't run the water over carbon but a 4' algae trough instead.
[/IMG]
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Wow--two really experienced and knowledgeable reefers on this thread--hope it becomes a sticky.

Paul, how would you describe the clarity of water in your tank---and not compared to that Manhattan sea water you add ;)
 
I also don't run the water over carbon but a 4' algae trough instead.

I think that is a fine plan. It would be interesting to see if the algae near the inlet with the ozone look the same as algae near the end of the trough. Maybe you have some mutants there. :D

I do feel, and it is only a supposition on my part, that ozone can help with the organic chemicals that corals exude to repel other corals. I don't think we could measure this and I think it is an important, often overlooked aspect of this hobby

I agree too that that is a likely benefit, especially for toxins not easily removed other ways (skimming, GAC, etc). :)
 
Paul, how would you describe the clarity of water in your tank---and not compared to that Manhattan sea water you add
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My water is as clear as gin. It could not be any clearer, I can't say if ozone, the RUGF or the tooth fairy has anything to do with that though.

It would be interesting to see if the algae near the inlet with the ozone look the same as algae near the end of the trough.
Click to expand...

Randy, interesting question so I walked the ten feet to the tank and looked.
The algae on the outlet part where it returns to the tank is much thicker than the almost non existant algae on the side of the trough that gets the Ozone infused effluent from the skimmer.
Very interesting.
This is from the far end of the trough. I can not collect algae from the ozone side.
Algae004.jpg


This part of the trough where the water enters is almost void of algae. What you are seeing there is only some coraline and a little short brown turf algae that grows because of the Long Island Sound water.
Gobieggs017.jpg


Maybe you have some mutants there.
Click to expand...
I only see Ninja turtles
 
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I was wondering what happened to Leonardo, Donatello, Rapheal and Michaelangelo.............

They are alive and well at Paul B's place. :D

Good to see you Paul. Stop by the Chem forum more often. :thumbsup:
 
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