What happens to the average marine fish...

Mr31415

Active member
...if you take away high nitrates and nitrites instantaneously (theoretically)?

I know pH, temp, salinity etc is important to gradually adjust them to, but can you remove VERY high levels of nitrite and nitrate too quickly?
 
Well first off Fish cant handle high nitrites so that in general would kill them before you dropped them. As for high nitrates I have dropped from around 100 to around 10 within a week before in my buddies tank with no effects. I dont think it would hurt them to do this very fast, I just dont know how you would do it.
 
100% water change :eek2: I wouldn't ever suggest that unless you spill a bottle of glass cleaner in there or something. Theoretically, you can't remove nitrate or nitrite too quickly.
 
Yes it is toxic to SW fish, maby not to the extent as it is in FW but it is still very toxic. I too would never recomend a 100% waterchange unless you spilled something terrible in there.

Even with a 100% W/C it would still be leaching out of your rock and sand and stuff and you probrobly couldnt get it down just by doing a 100% W/C.

The best way to get rid of nitrate is find the soure and fix the problem and do a 15% W/C weekly.
 
Actually, it is nitrite is not toxic to saltwater fish. I just read an article about that. Saltwater fish gills uptake something else that prevents their gills from uptaking nitrites. Freshwater fish do not have this same mechanism in their gills. Saltwater fish can stand extremely high nitrite levels quite well actually.

Dave
 
Nitrite

Aquarists' concerns about nitrite are usually imported from the freshwater hobby. Nitrite is far less toxic in seawater than in freshwater. Fish are typically able to survive in seawater with more than 100 ppm nitrite!17 Until future experiments show substantial nitrite toxicity to reef aquarium inhabitants, nitrite is not an important parameter for reef aquarists to monitor. Tracking nitrite in a new reef aquarium can nevertheless be instructive by showing the biochemical processes that are taking place. In most cases, I do not recommend that aquarists bother to measure nitrite in established aquaria.

The above is a quote from an article by Randy Holmes-Farley for Reefkeeping Magazine

http://www.reefkeeping.com/issues/2004-05/rhf/index.php
 
I've heard from Anthony Calfo that he does 100% water changes on his nano tank quite frequently. Can't be too bad I guess...

I've done 50% before, never 100%.
 
Why would making a 100% water change hurt anything in your system? If you take into account that in the wild this critters are receiving a permanent 100% water change, it shouldn't matter if you do it in your tank, as long as the necessary chemistry between water changes remains the same.

One can argue that is the best to do daily 100% WC ;)
 
I would never do a 100% water change. You would never get all the levels like ph, temp, salinity, etc.. within range, and not have adverse reactions. Besides that, what logical benifit would you get from doing 100% rather than 50% water changes for say 2-4 days straight. If you want to nock out some high levels, do it over the span of a few days rather than minutes or hours. Patience plays a big factor in the up keep of aquariums.
 
Just to get rid of a few incorect bits of info:


In frewshwater, nitrite prevents oxygen intake (into the blood stream). Adding salt prevents this. There is nothing within my knowledge that is different between the gills in freshy fish and the gills in salty fish, it is the sat in saltwater that makes the marine fish somewhat immune to nitrite.

However, that isn't to say I would be comfortable if I had nitrite in any one of my tanks, fresh or salt.
 
I would never do a 100% water change. You would never get all the levels like ph, temp, salinity, etc.. within range, and not have adverse reactions. Besides that, what logical benifit would you get from doing 100% rather than 50% water changes for say 2-4 days straight. If you want to nock out some high levels, do it over the span of a few days rather than minutes or hours. Patience plays a big factor in the up keep of aquariums.
 
goodblasson - actually I have managed that. The water that I newly mixed vs. the water that was in the tank differed by 0.1 C, 0.0002 in SG and 0.03 in pH. which in my mind is close enough.
 
Calfo does in fact do 100% water changes and probably has some of the best coral growth rates due to it.

He feeds heavy, strong, and fast, and then wisks it all away with the giant W/C. I also believe he does this once a week.
 
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