Preowned freshwater filter for new marine setup - is cycling needed?
#1
Hi,
After deciding to get back into fishkeeping I recently bought a 240L tank off eBay, the previous owners also threw in an internal and external filter.
I'm in the process of setting it up as a fish-only saltwater tank (no live rock yet, although I might add to the sump in the future if I get any difficulties). I'm 1 week into cycling it and have been ghost feeding but not yet seeing any ammonia levels with API test kit.
I wonder if I need to cycle it at all since I didn't change the filter media and it would have only been out of water for a matter of hours? Can the nitrifying bacteria of freshwater setups survive in saltwater, or will it be a halophilic species that needs to propagate?
Thanks