Tropical Fish Keeping - Aquarium fish care and resources

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-   -   More questions on cycling, filters, etc. (

AmyK 05-06-2009 09:48 AM

More questions on cycling, filters, etc.
I hope I am coming close to my 5 gallon Marineland (filtered, heated) being cycled. I'm doing the fishless cycling and when I add my ammonia, (about 4ppm) it takes it maybe 24 or so hours to reach zero. My Nitirites take about that long too. The only thing is, my nitrates are way up there (maybe 40ppm) and are staying at about that level. Any ideas what this can mean? It's been cycling about 5 weeks now.
Also, I've also noticed my Bio-Wheel has stopped turning. (It's the smallest one meant for a tank less than 10 gallons I think). Any advice what I should do??

MBilyeu 05-06-2009 12:45 PM

Your nitrates will continually climb during a cycle. I would only add 2ppm of ammonia and see if it will go away in 12 hours. I have a feeling that it will, and that means that your tank is cycled. If so, I would do a large water change (50-75%) to reduce your nitrates then add fish right after the water change.

Sorry I can't help with the filter question.

Twistersmom 05-06-2009 02:43 PM

Make sure the bio-wheel is seated prorerly.
Does the filter water flow seem less than normal? You could have some algea growth or something else clogging the intake or propellor. Be careful to only use declorinated water if the filter needs cleaning, so you do not harm your cycle.

AmyK 05-07-2009 05:39 AM

Should I keep adding the ammonia if my ammonia tests at 0 ppm, nitrites 0 ppm and nitrates 40-80ppm?

Twistersmom 05-07-2009 07:06 AM

The cycle needs the ammonia to continue. The only reason I would not add ammonia would be if the plan was to add fish the very next day.

MBilyeu 05-08-2009 04:00 PM

If your test results are that, then you tank is fully cycled. You will need an ammonia source to keep it cycled, so if you are not going to be putting fish in that day, then I would keep adding ammonia (2ppm) until the day you plan on adding fish. Remember to do a large water change before you add the fish because you do not want your nitrates over 40ppm. Less than 20ppm would be ideal.

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