Cycling 5 Gal With Cycled Sponge Filter

I currently have a 29 gallon that is cycled and I've had a sponge filter in the cycled tank for about two weeks. I'm setting up a quarantine tank for my fish that have ich in a 5 gal. I was wondering how long it will take for a 5 gallon with a cycled sponge filter to completely cycle so that I can add the fish and begin treating?

 

I have a thread about this exact same subject. Mine is a 5 gallon Betta tank, it was a fish-in cycle seeded with media from my cycled 45 gallons.

It took me exactly 21 days to cycle.

 

I have a thread about this exact same subject. Mine is a 5 gallon Betta tank, it was a fish-in cycle seeded with media from my cycled 45 gallons.

It took me exactly 21 days to cycle.

Just tested my parameters at my lfs, they said it's cycled in one day of setting it up? Weird lol. I guess my big tank cycled the sponge pretty good

 

Just tested my parameters at my lfs, they said it's cycled in one day of setting it up? Weird lol. I guess my big tank cycled the sponge pretty good

I’ve heard of instant cycling. It didn’t happen to me, I think, because the filter I have for my Betta is ridiculously weak (which is what you want with a Betta).

If I were you I would buy an API master kit and test my water regularly nevertheless. It would be a well spent $30.

 

Anytime I need to cycle quickly I move some gravel and a sponge filter from a cycled tank, and also add 25 mp4 per 10 gallons (12.5 ml for a 5 gallon) l from my large bottle of Tetra Safe Start (250ml bottle shaken well). I can then add the fish immediately