cycling with dry rock

[JohnWright]

I set up a 250litre tank on 9th Dec with dry aquascape rock 2 clownfish and brightwell live bacteria. since then had no readings for nitrite and nitrate but had 2 readings for ammonia at 0.25 up tp 19th Dec. had abacterial bloom on the 12th nd almost gone now. Has my tank cycled yet please?

 

[Yates273]

Short answer is you will know your tank is cycled when you dose ammonia (1ppm) and it processed from nitrite to nitrate in a 24 hour period. Test your nitrates to see where they are at. Nitrites are not deadly
In a reef tank but ammonia is. Just make sure your tank is processing ammonia.

 

[JohnWright]

Short answer is you will know your tank is cycled when you dose ammonia (1ppm) and it processed from nitrite to nitrate in a 24 hour period. Test your nitrates to see where they are at. Nitrites are not deadly
In a reef tank but ammonia is. Just make sure your tank is processing ammonia.

Thank you

 

[Azedenkae]

I set up a 250litre tank on 9th Dec with dry aquascape rock 2 clownfish and brightwell live bacteria. since then had no readings for nitrite and nitrate but had 2 readings for ammonia at 0.25 up tp 19th Dec. had abacterial bloom on the 12th nd almost gone now. Has my tank cycled yet please?

Actually the answer is your tank is considered 'cycled'. Because you are doing a fish-in cycle, the way to check is very different from fishless. So long as your ammonia is 0 to 0.25ppm while nitrite without any water changes, then your tank is considered 'cycled' for your current stocking level.

'Cycled' in quotation marks because technically it sounds more like you have microorganisms consuming ammonia as a nitrogen rather than an energy source, i.e. for growth rather than respiration, which hence also resulted in the bacterial bloom, but also why you don't see nitrite or nitrate. This is not nitrification, but anyways your tank is still considered 'cycled' nonetheless.

 

[JohnWright]

Actually the answer is your tank is considered 'cycled'. Because you are doing a fish-in cycle, the way to check is very different from fishless. So long as your ammonia is 0 to 0.25ppm while nitrite without any water changes, then your tank is considered 'cycled' for your current stocking level.

'Cycled' in quotation marks because technically it sounds more like you have microorganisms consuming ammonia as a nitrogen rather than an energy source, i.e. for growth rather than respiration, which hence also resulted in the bacterial bloom, but also why you don't see nitrite or nitrate. This is not nitrification, but anyways your tank is still considered 'cycled' nonetheless.

Thanks for this