SW/FW bacteria - same or different?
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SW/FW bacteria - same or different?

This is a discussion on SW/FW bacteria - same or different? within the Beginner Saltwater Aquariums forums, part of the Saltwater Fish and Coral Reef Tanks category; --> This is related to my other post but that thread is all over the place so - Does anybody know if the nitrifying bacteria ...

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SW/FW bacteria - same or different?
Old 11-13-2008, 07:06 PM   #1
 
SW/FW bacteria - same or different?

This is related to my other post but that thread is all over the place so -

Does anybody know if the nitrifying bacteria in SW and FW are the same?

The reason I'm asking is - in converting a brackish tank to a full marine tank - I could do it very slowly over a couple weeks if it meant preserving the bacteria I've been culturing all this time - I was under the impression it's the same bacteria in both environments - if it isn't and the high salinity is just going to kill my present bacteria I might as well just do it all at once.

Anybody know?

Thanks!

Jonathan
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Old 11-14-2008, 01:59 AM   #2
 
I guess this isn't common knowledge?

Well, for me its a mute point - I visited my lfs and he told me his live rock was 99% cured and that after adding it I could add fish almost immediately (I trust him, he's a fellow Berkeley grad - besides, we live in LA so I have good reason to believe it's fresh) - so I just upped the salinity to 1.022. Sorry bacteria!!

But if anybody knows the answer to the question, I would be very interested to hear it!

Thanks,

Jonathan
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Old 11-14-2008, 12:05 PM   #3
 
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as far as that answer goes i can't give you it for sure, but when i go to the lfs they have the bottles called tlc and in them they have bacteria that moves the cycle more quckly. well they have 2 bottles one for fresh and one for salt.

as for the cycle. i don't believe that and neither should you. i used live rock that i have had for 4 years for my 55g tank and it still had all the cycle results. He just wants you to spend more money mate. It really doesn't matter what you do, you'll still have a cycle and it'll always be there and you'll still kill sensitive fish. If you have a clown or damsel that's fine, but a lawnmower blenny or a tang or firefish, yeah they'll all die.
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Old 11-14-2008, 12:07 PM   #4
 
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Quote:
Originally Posted by Kellsindell View Post
If you have a clown or damsel that's fine, but a lawnmower blenny or a tang or firefish,
FYI those were just examples of a few fish that'll die or survive, not a complete list.
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Old 11-14-2008, 01:21 PM   #5
 
Don't worry - I'm new to this and have limited resources - I'm not going to stock anything but very hardy fish.

So why big brand bacteria-in-a-bottle products (API STRESSZYME etc...) say it works for salt and fresh?

As for the cycle - I don't think he wants me to spend more money - he knows I'm going to buy it from him anyway.

He's had it in cycled enclosure for 3 months, he says.

Anyway, I wasn't planning to add fish with the live rock, of course I'll wait until the water parameters are safe. I was hoping that would be a couple days but if it's longer, so be it.

Thanks,

Jonathan
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Old 11-14-2008, 04:33 PM   #6
 
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it's the water that needs cycling not the rock. tell him to throw a tang into salt water in the time he's recommending with liverock that he wants to give you and have it not be tied into the main system and see how long that sucker lasts... or if he'll even do it.
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Old 11-14-2008, 05:10 PM   #7
 
The water needs cycling?

I thought "cycling" referred to the culturing of nitrifying bacteria on various porous surfaces?

I thought live rock needs to be "cured" because it comes with a high degree of dead organics which will decay and cause a spike in ammonia/nitrite/nitrate.

Now I am getting confused.
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Old 11-14-2008, 09:04 PM   #8
 
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the water hold the bacteria the rock just helps with the filtration. if you do a cycle with no liverock and sand, just the tank the bacteria has to be somewhere.
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Old 11-15-2008, 01:08 AM   #9
 
In my research I found that the majority of the bacteria forms on a solid surface - I thought that was the whole Idea of biological filtration and a big part of why current is so important - it circulates the water over the bacteria colony, feeding it nitrites etc... I'm not sure what you think live rock does if it isn't a host for bacterial colonies.

However, I do know of an old fish keeper who runs a shop in Little Tokyo, who keeps small salt-water tanks healthy with nothing but an airstone, so what you are saying is possible. Still I think even in that case most of the bacteria is in the sand. That guys is something of a magician though, I don't know how he does it...

If bacteria were able to maintain a population in open water, what's the point of bioligcal filters and sumps that run water through sponges, ceramic rings, live rock etc?
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Old 11-15-2008, 07:30 AM   #10
 
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much of it will be to much for the water (for the livestock) which is why we use the filtration methods of LR and live sand(or dead sand that became live). it absorbs those nutrients making the water less harmful and more stable.
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