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Thread: is my cycle over? Reply to Thread
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Topic Review (Newest First)
10-10-2012 07:42 PM
discuspaul The bacteria will not die off so long as you keep adding ammonia, or a source for producing ammonia, like some fish. So when your ammonia & nitrites are '0' and your nitrates low after a wc, your cycle is complete and i'ts time to add your fish.
10-10-2012 07:20 PM
thebuddha
Quote:
Originally Posted by Diana View Post
Do water changes to keep the nitrites under 5 ppm.

When you feed too much ammonia the first population of bacteria turn it into too much nitrite faster than the second population can get rid of it. That is why you aim for 3 ppm max on the ammonia. That much generally will not make the nitrite spike too high.
okay. so it will be complete when:
i dose 3ppm of ammonia, and in 24 hours i get readings of 0 ammonia 0 nitrites and any amount of nitrates. then do a wc to get rid of excess nitrates. then its ready?

but isnt it bad to have 0 ammonia, because then some of my nitrifying bacteria would die off?



10-10-2012 01:15 AM
Diana Do water changes to keep the nitrites under 5 ppm.

When you feed too much ammonia the first population of bacteria turn it into too much nitrite faster than the second population can get rid of it. That is why you aim for 3 ppm max on the ammonia. That much generally will not make the nitrite spike too high.
10-09-2012 10:57 PM
thebuddha
Quote:
Originally Posted by MSG View Post
When I speed cycled my 10G, I didn't CHANGE the water. I only started with about 5-6G and kept adding dirty water from the betta tanks.

I pumped up the heat to the 80's but the tank was ACTUALLY 98 degrees for 4-5 days.


Bud, do you have anything that will absorb the nitrates?

I'm not crazy about the filter you're using. I typically use the HOB style filters. In tank ones are troublesome to maintain.

sorry i never answered your question form your first post on this thread, yes i have an air stone and i did throw it in the tank.

i don't think i have anything that will absorb the nitrates...what could?
and i really dont like the filter either, but its all i have....for now!
10-09-2012 10:27 PM
MSG When I speed cycled my 10G, I didn't CHANGE the water. I only started with about 5-6G and kept adding dirty water from the betta tanks.

I pumped up the heat to the 80's but the tank was ACTUALLY 98 degrees for 4-5 days.


Bud, do you have anything that will absorb the nitrates?

I'm not crazy about the filter you're using. I typically use the HOB style filters. In tank ones are troublesome to maintain.
10-09-2012 10:07 PM
pejerrey As far as I know, water changes make it slower... Not sure tho, someone chime in on that?
10-09-2012 09:31 PM
thebuddha current readings:
ammonia = 1-2ppm
nitrite > 5ppm
nitrate = 40-80ppm


another WC to get rid of nitrites???
10-09-2012 03:51 AM
thebuddha
Quote:
Originally Posted by pejerrey View Post
What are you using to test?
API master test kit


Quote:
Originally Posted by Diana View Post
no, 3 ppm max.

hmm...i have been dosing to 4ppm this whole past month...ill cut down now.



Current readings:
ammonia=0
nitrites=0
nitrates=somewhere between 20 and 40



just added ammonia, now i wait another dayyyyyy
10-09-2012 03:42 AM
Diana
Quote:
then dose ammonia back up to ~4ppm
no, 3 ppm max.
10-09-2012 03:30 AM
pejerrey What are you using to test?
10-09-2012 03:26 AM
thebuddha
Quote:
Originally Posted by MSG View Post
WOW, your Nitrates must have been over 300ppm if that's even possible.

Do you have any plants in quarantine you could feed that nitrate filled tank water to?

  • What kind of substrate are you using?
  • What size tank?
  • What filter are you using?
ya i shoulda been testing my nitrates over the past week, i was so tired of seeing ~5ppm that i stopped testing for em, then boom maxed out..

anyways:
  • eco-complete
  • 10g
  • tetra 10i


just finnished the WC, ill check params again in a few.....
10-09-2012 03:22 AM
MSG WOW, your Nitrates must have been over 300ppm if that's even possible.

Do you have any plants in quarantine you could feed that nitrate filled tank water to?

  • What kind of substrate are you using?
  • What size tank?
  • What filter are you using?
10-09-2012 02:56 AM
thebuddha ok, got in the WC right before i left for work,
(roughly 90%)

just tested the water and got ammonia=0 nitrite=0 nitrate>150 still
im guessing i should do another large wc?
then dose ammonia back up to ~4ppm
10-09-2012 02:50 AM
Diana Nitrifying bacteria do not like ammonia or nitrite over 5 ppm, but do not seem to care about nitrate.

They require carbonates, they use that as a source of carbon. If the KH can be held stable as low as 3 degrees is fine, but a lot higher works, too. If it keeps dropping (for example, I have substrate that keeps removing the carbonates) keep adding carbonates.

Once a day (not more often) add enough ammonia to read 3 ppm.

When the bacteria can remove the ammonia within 24 hours and nitrites also read 0 ppm the cycle is done.

If you are still not ready for fish keep on feeding the bacteria.

Water changes are optional, but when you are ready for fish you will need to do a really large water change to get the nitrates way down.
10-09-2012 01:49 AM
wendyjo If your nitrates are really 150 I'd probably do a partial water change and then continue as usual. I'm not sure but nitrates that high may slow down the cycle. Someone jump in if that's not accurate.
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