ozone to increase do

xinguinsis · Post by **xinguinsis** » 04 Feb 2004, 08:04

Hi all,
Anybody had any experience using ozone reactors to increase do levels.I was wondering besides the potential for nitrite spikes if the reactor went on the blink and orp levels being to high where there any other potential pitfalls in this approach to raising dos.
Regards Chris

magnum4 · Post by **magnum4** » 04 Feb 2004, 20:48

unless the tank is really massive and has a massive waste load then there is no need to use ozone to increase DO.

Air pump would be alot cheeper and less risky if all you want to do in increase DO.

coelacanth · Post by **coelacanth** » 04 Feb 2004, 22:21

magnum4 wrote:unless the tank is really massive and has a massive waste load then there is no need to use ozone to increase DO.
Air pump would be alot cheeper and less risky if all you want to do in increase DO.

I agree. There should be no need with a correctly stocked freshwater aquarium to ever use ozone. Even peroxide reactors should only rarely be necessary.

xinguinsis · Post by **xinguinsis** » 05 Feb 2004, 01:32

Thanks for your replies.What level dos do you get with this ?Even with good water quality and some fairly aggressive air water interaction i still usually sit at 5.4ppm to 6.0ppm tops at 30c .If i were to experiment with this it would probably be with a 2500 litre set up and quite a large reaction chamber which I thought would be a reasonable volume to work with.
Regards Chris

coelacanth · Post by **coelacanth** » 10 Feb 2004, 10:20

xinguinsis wrote:Even with good water quality and some fairly aggressive air water interaction i still usually sit at 5.4ppm to 6.0ppm tops at 30c

At that temperature and assuming you are at an elevation at or below 1000ft above sea level you are going to struggle to get it above that in any aquarium where there is any significant BOD. Why do you have your temperature so high?

xinguinsis · Post by **xinguinsis** » 26 Feb 2004, 05:48

I have it at 30c so I can drop it a couple of degrees when I'm trying to trigger a spawn . What temperatures do you work at?
Regarrds Chris

Crazie.Eddie · Post by **Crazie.Eddie** » 26 Feb 2004, 20:18

A pump would be sufficient, as far as how much, not sure. Water movement will oxygenate the water. Even when the fish swim around, this will oxygenate the water. That's why when fish lay eggs, the parents will fan the eggs to keep them well oxygenated.

If you're worried about too much water movement, use a wet/dry filter with a VERY LARGE sump. You can use large pumps in there to thrash the water around. The returning water will then be fresh and well oxygenated.

xinguinsis · Post by **xinguinsis** » 27 Feb 2004, 10:36

All of the tanks I keep catties in have trickle filters with air pumed into them. These are run at a fairly low level so the water has to drip through alot of air before it returns to the tank.
Regards Chris

coelacanth · Post by **coelacanth** » 27 Feb 2004, 11:56

xinguinsis wrote:I have it at 30c so I can drop it a couple of degrees when I'm trying to trigger a spawn . What temperatures do you work at?

Depends on the species. I'd very rarely go above 28C with any fish (there are always exceptions), more usually 23-26C for maintenance. At sea level the maximum DO levels likely even at only 23.9 deg. C would be 8.6 ppm. At 1000 feet above sea level this drops to 8.3 ppm.
So you can see that at the temperature you are running the 5.4-6 ppm is likely to be very close to the maximum achievable.

xinguinsis · Post by **xinguinsis** » 11 Mar 2004, 12:25

Yeh i used to run medical grade oxygen into my trickles for a very slight increase in do until I saw a safety video on how flammable it makes materials that aren't usually good fuels.
Regards Chris

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