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TROPICAL FISH  AFICIONADO
TROPICAL FISH AFICIONADO, YOUR TROPICAL FISH RESOURCE
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We just started a 46 gallon freshwater aquarium a month ago,

Resolved Question:

We just started a 46 gallon freshwater aquarium a month ago, and after the sad loss of a baby bala shark, we've learned that the petstore completely misled us about how best to establish a new tank (2 gouramis, 1 pictus catfish, 1 upside down catfish & 1 bala). (we now know that this tank size is inappropriate for the balas, to say the least!)

Currently, nitrite levels are at like 4-5x the recommended range, ammonia is zero, and nitrates are in the ok-borderline dangerous levels. I've performed 25% water changes twice in the last 4 days, and see no change in the toxic nitrite level yet. I've removed all but a thin 1/4 inch layer of black pebble substrate from the tank (was 2 inches thick),and vacuumed the gravel w/ each change, added water conditioner, then bacteria, and sea salt to address the nitrite level. no change in readings.....any suggestions about continuing w/ water changes or different course of action?? THAAAAAAANK YOU!!!!!
Submitted: 4 years ago.
Category: Pet
Expert:  TROPICAL FISH AFICIONADO replied 4 years ago.

You made an understatement when you said that "the petstore completely misled us about how best to establish a new tank" .

 

Not only is the tank too small for the fish you have but these fish are not the appropriate types to use when cycling a tank. I don't to what extent you're aware of the cycling process but just in case I've listed a link below which will supply you with a brief overview.

 

As your tank is passing through the cycling process and hopefully nearing the end of it, the presence of nitrites is inevitable so what needs to be done is to try and not worsen the nitrite situation.

 

Ok as for trying to put nitrites under control.

Drastically reduce the amount of food you are feeding the fish. Feed the fish only a small pinch of food once every other day. Excess feeding and the subsequent fish waste produced are fuel for nitrite growth.

 

Normally I would suggest adding aquarium salt instead of sea salt to the water but as you have catfish in the tank it's best to not use any kind of salt as catfish do not react well to it so leave the salt out.

 

Do not change or clean the filter media as this is where the beneficial bacteria that breaks down nitrites will colonize. Once all traces of nitrites have been eliminated should you then change/clean the filter media.

 

Continue to do partial water changes every 3-4 days. Change between 15%-20% of the water when doing the water changes.

 

Try not to add too many additives to the water, i.e., bacteria, nitrite removers, etc.etc. as they will not be of any help and some might even take the tank back a few steps.

 

Please keep in mind that what I've recommended is not a quick cure as none exists.

What's happening in the water is normal for a fairly new tank set-up such as yours it's just a matter of trying to lessen the impact.

 

On a final note: be wary of advice given by pet stores/shops as many a time their number 1 priority is making money and not on a customer's healthy aquarium.

Basically problematic fish tanks and aquariums are good for pet store business.

 

Best wishes and please let me know if you have any questions.

 

http://www.thetropicaltank.co.uk/cycling.htm

 

 

.



Edited by TROPICAL FISH AFICIONADO on 2/2/2010 at 11:01 PM EST
Customer: replied 4 years ago.

Thanks so much for your response, and helpful information.

To clarify,

  • I actually DID add aquarium salt (1 tbsp/ 5 gallons water) already (yikes) so is there anything I should do to counteract that?
  • I have limited feeding to only a pinch every other day thus far, and ammonia levels are currently zero.
  • When you say, don't change/clean the filter media, does that mean the two replacable mesh-like filters that insert into the back of the large filter itself (sorry for the unfamiliarity here!!)? Even though they say to replace that every two weeks (which I did)....should I just leave them in there until the levels are ok again?
  • Would it help to re-insert the original disposable filters that had in there for the first 3 weeks or so? I still have them, although they're dried out.
  • When you mention not adding too many additives to water: What then, at a minimum, should I be putting in there to ensure the tap water I'm adding is safe for the fish? I've been adding a 1) water conditioner, 2) bacteria supplement 3) aquarium salt (which I'll discontinue per your advice for catfish)
  • Many online sources are advising to change 20-25% water every day until high nitrite levels start to come down. (The nitrite levels are off the little chart from the test strips package on the highly toxic end.) Is waiting 3-4 days to change out any water again a better idea?
  • Is there any product you'd recommend to help either speed up the cycling process or help the current fish survive the highly dangerous environment? We already lost one baby bala shark yesterday, and I'm taking the other back to the store for its safety (plus, too big, I've learned, for the tank!).

Many many thanks for your help -- your advice is much appreciated, as I'll be jumping into whatever action you advise once home from work!! :)

Expert:  TROPICAL FISH AFICIONADO replied 4 years ago.

The only way to counteract/dilute salt in aquarium water is via partial water changes obviously not adding salt when doing them. Apparently the catfish have been able to survive the exposure to salt and it's good that you didn't overdose.

 

You're feeding properly--keep it up. No surprise that ammonia=-0-, the nitrites consumed all of it.

 

Yes--do not change any filter media for now even the mesh-like filters. As mentioned prior, the filter media is a vital area in terms of the formation of "good" bacteria.

The instructions which stated to replace filter media every two weeks are correct---but this would only apply to a cycled tank. Actually the same holds true for gravel/substrate as this is another important area where "good" bacteria colonize--not the time to change/remove while tank is cycling.

 

Wouldn't help to re-inset old filter media as the benefical bacteria has since died off.

 

Re: additives---the only thing you should be using is a product to dechlorinate tap water and make sure the water that you'll add to the tank is already dechlorinated before adding to the tank. Some fishkeepers add tap water to the tank and then add the dechlorinator---risky move! The bottled bacteria or supplement, honestly is a waste.

I believe the so-called bacteria contained inside these bottles is actually dead bacteria and as you have seen your tank hasn't cycled any faster despite using it.

 

As for the frequency of doing partial water changes when nitrites are high---it's kinda like a trade-off--the more frequent you do the water changes the longer it takes the water to cycle but it makes life a bit easier for the fish. I felt 3-4 days was a moderate/in-between course of action to take but if the nitrites are off the chart as you mentioned then yes it would be best to do more frequent partial water changes but remember as ironic as it may sound you need the nitrites in order for the tank to cycle so don't change too much water.

 

Great question you ask concerning available products to speed up the cycling process.

There is a product called Bio Spira which claims to instantly cycle a tank. Click on link below for a view of the product. The only thing I can tell you about it is that I tried it only once and it did not instantly cycle my tank although it lessened the amout of time it took the tank to cycle but to be fair this product needs to be refridgerated from the moment it is manufactured until the time it reaches your home and still needs to be refridgerated at home so if at some point the batch I used was out of refridgeration (while in transit from the various hands it passed through) it's possible it lost some of it's potency but obviously I can't say for sure if the product really doesn't do as claimed or I just got a defective batch.

 

http://www.aquariumplants.com/product_p/biosp02.htm

 

 

.

 

 

 

Customer: replied 4 years ago.

I SO appreciate your help, and will follow this to a tee! Last itteration to clarify, I promise... just want to be sure and get it right, and you're the BEST help I've found yet!!

 

I am then assuming that:

  • Vacumming gravel substrate to clean waste products out during water changes is GOOD (versus changing or removing the substrate, which sounds BAD while cycling)
  • it is helpful to vacuum 1-2x day to remove waste quicker (??)
  • scrubbing any slimy stuff (nothing visible, just slick to touch) from ornaments, silk plant and glass is BAD

Thanks for this final clarification - SOOO much appreciated!

Expert:  TROPICAL FISH AFICIONADO replied 4 years ago.

Vacuuming the gravel when doing water changes is fine but don't overclean it as too much cleaning of the gravel can affect the amount of beneficial bacteria there is in the gravel/water.

 

When doing water changes vacuum only part of the gravel bed. During the next water change vacuum another part of the gravel bed, etc.,etc.

 

No need to vacuum more than when you do the water changes as remember you're only feeding the fish once every other day so there shouldn't be that much waste product.

 

For now while the tank is cycling it's best to not clean the ornaments. Once the tank has finished cycling then you can clean the ornaments and decor.

 

And please remember to be patient- I truly understand that this is a very frustrating time in the life of your aquarium but unfortunately we can't rush or change the biological processes that naturally occur.

 

I'm glad I've been able to assist you and I oh so understand that pet shop advice is sorely lacking. Lemme know if you have any more questions or inquiries.

 

Ric-------

 

 

.

 

.

 

 



Edited by TROPICAL FISH AFICIONADO on 2/3/2010 at 1:18 AM EST
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TROPICAL FISH  AFICIONADO
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