Yes another Orp question

[Randy Holmes-Farley]

I don't agree with those values being able to be associated with good, better best, but I do think that if ORP is truly below 200 mV, there is some problem.

Any idea how quick of a rise you should see in ORP once you start dosing ozone (50mg/hr) in a skimmer that has a flow through it of 300 gph with a total tank volume of 350 gallons?

ORP typically builds over a few days then levels off when first starting ozone.

 

[ronc98]

Thanks Randy.

 

[Randy Holmes-Farley]

:thumbsup:

Good luck.

 

[ronc98]

I am kind of 50/50 with Ozone. I understand that it oxidizes many of the organics but it also has to oxidize alot of the fauna in the water column as well it can not be selective.

I am going to run it for a little while and see how things go.

 

[Randy Holmes-Farley]

Yes, I understand. I just initiated ozone as an experiment, and over the next few months will publish these articles to help folks (and myself) decide for themselves whether to use ozone or not:

Ozone and the Reef Aquarium 1. Chemistry and Biochemistry
Ozone and the Reef Aquarium 2. Equipment and Safety
Ozone and the Reef Aquarium 3. Changes in a Reef Aquarium on Initiating Ozone

 

[Billybeau1]

Those ORP numbers came from an old Albert J Theil book. I dont remember when the book was written but it is quite outdated.

 

[Randy Holmes-Farley]

The source of lots of chemical misinformation. Probably the same book where he recommended adding permanganate directly to the tank to raise ORP.

 

[Billybeau1]

Yep, thats the one. Good thing I found this forum.

 

[DrBDC]

I used to try and follow his teachings back when I first started my tanks. I was younger, poorer, etc. so I couldn't/didn't do some of the things he taught/wrote but I did follow a lot. I couldn't make a tank work and had given up on the hobby for about 5 years. Looking back now, hmmmmm. No seriously he did do a lot for the hobby but just like anything else, things change and knowledge is acquired and corrected. Isn't there something about information doubling every 3 or 4 years?

 

[ronc98]

Great Randy I look forward to the articles.

The hardest thing about this hobby is sifting through the information and deciding what is fact(scientific) from fiction(opinion).