oxygen ? ozone?
- Thread starter David M
- Start date
I have discussed this with a professor in biologi who has used most of his profesional life with this theme and breeding of salmon and other human food fish. It dosent work and give way more losses than with air. O2 works as an oxidant and is not good for survival rates. His researce has been taken in to the human medicine and has made survival rates of to early born babies much better after they stopped giving them O2 and gave air instead.
David M
New member
Still confused, I got the idea looking through the AES catalog, the Fish-Flo2 Oxygenation System. Then I looked at one of the "Tech Talk" boxes:
"Pure oxygen can be a very cost effective tool for raising fish. It can unclutter the culture tank, reduce suspended solids, improve feed-conservation ratios and reduce stress."
"Pure oxygen can be a very cost effective tool for raising fish. It can unclutter the culture tank, reduce suspended solids, improve feed-conservation ratios and reduce stress."
The exact biochemistrie of the oxydation processes is to hard for a simple sole as me to understand and explaine, but is has been tested in large scale hatcheries under supervision from the nearbye university and doest help for better survival. I take the proffs words for that.
mano
New member
David,
We often pumped pure oxygen into our white seabass raceways, since these were on flow through, and were susceptable to whatever was in the local lagoon up here. We also had lines indoors for some of the growout pools and would use it when density became a problem and thus when DO's were low and it also came in handy for the occasional power outtage.
We never really used pure O2 in our seabass larvae incubators but all of the water coming in was filtered, including ozone. It definitely made a difference with survival in all of the systems after the ozone unit was installed, but especially with the larvae. We are basically down stream from the strawberry fields and the flower fields in Carlsbad so when it was time for them to fertilize the fields it would totally wipe out whatever spawns we had set up.
For rotifers we also use those portable oxygen generators, Reed has them I believe, and those are excellent for dense cultures.
I'm also using a small ozone unit on the seahorse system I have and it too made a significant difference since our water comes from that same lagoon. I guess it's just a matter of if you want to pay for an ozone system but since you've had pretty good success maybe it isn't totally necessary for you.
Christine
We often pumped pure oxygen into our white seabass raceways, since these were on flow through, and were susceptable to whatever was in the local lagoon up here. We also had lines indoors for some of the growout pools and would use it when density became a problem and thus when DO's were low and it also came in handy for the occasional power outtage.
We never really used pure O2 in our seabass larvae incubators but all of the water coming in was filtered, including ozone. It definitely made a difference with survival in all of the systems after the ozone unit was installed, but especially with the larvae. We are basically down stream from the strawberry fields and the flower fields in Carlsbad so when it was time for them to fertilize the fields it would totally wipe out whatever spawns we had set up.
For rotifers we also use those portable oxygen generators, Reed has them I believe, and those are excellent for dense cultures.
I'm also using a small ozone unit on the seahorse system I have and it too made a significant difference since our water comes from that same lagoon. I guess it's just a matter of if you want to pay for an ozone system but since you've had pretty good success maybe it isn't totally necessary for you.
Christine
rsman
New member
its all just numbers,
for rotifers its an easy call, you can easily have concentrations high enough to consume a large amount of O2, making it harder to get the O2 concentration to normal by using air alone, dont forget you do need to use air, you need to bleed off the CO2 and such O2 shouldnt be used to do this as its just a waste
for fish, you have to look at your setup, are the O2 levels low enough to be a concern, if so then you are much better off after degassing using O2 to bring the DO up to normal levels.
there is no benifit in bringing the entire volume upto saturation.
using one of those bio-ball mixer dudads works just as good for oxgyen as it does for CO2 and allows you to guess at what amount you want to supply without setting up a controller.
as for ozone, I only played around with it, never used it for long enough see a difference. but there should be an overall improvement in a breeding setup beyond what a reef would see.
for rotifers its an easy call, you can easily have concentrations high enough to consume a large amount of O2, making it harder to get the O2 concentration to normal by using air alone, dont forget you do need to use air, you need to bleed off the CO2 and such O2 shouldnt be used to do this as its just a waste
for fish, you have to look at your setup, are the O2 levels low enough to be a concern, if so then you are much better off after degassing using O2 to bring the DO up to normal levels.
there is no benifit in bringing the entire volume upto saturation.
using one of those bio-ball mixer dudads works just as good for oxgyen as it does for CO2 and allows you to guess at what amount you want to supply without setting up a controller.
as for ozone, I only played around with it, never used it for long enough see a difference. but there should be an overall improvement in a breeding setup beyond what a reef would see.
