Aquarium chemistry

Stumpy · Joined: 18 Jan 2008 Posts: 9

I set up a small aquarium and used de-chlor. Waited a week and bought a
goldfish. After one week it had Ich, used malachite green and raised tank
temperature to 80 deg., it recovered. Then at it's 2 week mark the goldfish
looked ill and had its tail corroding - I assumed with tailrot. Took a
water sample to a petstore and wanted to buy an anti-biotic. The aquariaist
said that the sample had high ammonia and that it was not tailrot, would
not sell the antibiotic. The fish died that night.

http://fins.actwin.com/mirror/begin-cycling.html

My question is - with no fish in the tank to continue producing nitrogen,
will the cycle shown in the graph on the link above continue as depicted?
Or will the cycle be interrupted until I install a new fish to produce new
nitrogen? My preference would be to leave the tank alone until day 40 and
then feel much better about putting in a new fish.

Could not find a group where this would be on-topic, but it is related.

Archived from group: rec>ponds

ponds2u · Joined: 20 Feb 2008 Posts: 1

Hi,

If the tank is left without fish the ammonia with be converted to
nitrite and the nitrate as it would do with fish present as the
bacteria that makes this process work feed on the ammonia that is
currently present.

I would leave the tank for 4 days and then do a quater water change to
get rid of any high levels of nitrate that may be left from the process
and then add another fish.. by doing this you will still have plenty of
bactria living in the tank to sustain the new fish.

Be ware : If you leave the tank for too long with no fish the bacteria
that have accumilated will die due to the lack of food for them
(ammonia) and you may well have problems again.

All of the above only applies to a tank that has a suitable filter in
place.

Hope this helps Smile

Dave

Stumpy;770842 Wrote:
> I set up a small aquarium and used de-chlor. Waited a week and bought a
>
> goldfish. After one week it had Ich, used malachite green and raised
> tank
> temperature to 80 deg., it recovered. Then at it's 2 week mark the
> goldfish
> looked ill and had its tail corroding - I assumed with tailrot. Took a
>
> water sample to a petstore and wanted to buy an anti-biotic. The
> aquariaist
> said that the sample had high ammonia and that it was not tailrot,
> would
> not sell the antibiotic. The fish died that night.
>
> http://tinyurl.com/ydgk9d
>
> My question is - with no fish in the tank to continue producing
> nitrogen,
> will the cycle shown in the graph on the link above continue as
> depicted?
> Or will the cycle be interrupted until I install a new fish to produce
> new
> nitrogen? My preference would be to leave the tank alone until day 40
> and
> then feel much better about putting in a new fish.
>
> Could not find a group where this would be on-topic, but it is related.

--
ponds2u

Tynk · Joined: 16 Aug 2007 Posts: 200

On Jan 18, 10:39�am, "Stumpy" wrote:
> I set up a small aquarium and used de-chlor. �Waited a week and bought a
> goldfish. �After one week it had Ich, used malachite green and raised tank
> temperature to 80 deg., it recovered. �Then at it's 2 week mark the goldfish
> looked ill and had its tail corroding - I assumed with tailrot. �Took a
> water sample to a petstore and wanted to buy an anti-biotic. �The aquariaist
> said that the sample had high ammonia and that �it was not tailrot, would
> not sell the antibiotic. �The fish died that night.
>
> http://fins.actwin.com/mirror/begin-cycling.html
>
> My question is - with no fish in the tank to continue producing nitrogen,
> will the cycle shown in the graph on the link above continue as depicted?
> Or will the cycle be interrupted until I install a new fish to produce new
> nitrogen? �My preference would be to leave the tank alone until day 40 and
> then feel much better about putting in a new fish.
>
> Could not find a group where this would be on-topic, but it is related.

What size tank do you have?
I'm curious why you waited a week after setting it up before you added
the goldfish.
The problem your goldie had wasn't finrot, but ammonia burns.
Most likely, the problem was too small a tank for a goldfish, as well
as being put into an uncycled tank.
Also, are you planning on keeping a fish tank or are you setting it up
to hold pond fish?
Do you plan on keeping the tank a goldfish tank?