Fishless Cycling in a 2 weeks?

[Stevie]

When I set up my 150 gal. I added 3 cups of the water/and 1 cup of substrate from my older 50 gal tank's filter.   I upped the heat started adding ammonia to my 150 gal. on April 7th and kept it at 5 ppm, testing 2x a day. I noticed on Saturday that the ammonia cleared in 8 hours, so I tested for Nitrites.   It was high as it should be.   I've kept the ammonia levels at around 4 ppm, and it has been clearing rapidly.  This morning when I tested again, I got 0 ppm ammonia and 0 ppm for nitrites.  I retested and same results. Is it possible to cycle a large tank in just 2 weeks?

[artw]

you bet. that is the beauty of fishless cycling.  you can verify it by adding 5ppm of ammonia and checking to see in 24 hours, ammonia and nitrite should be zero.

dont forget to do a 99% water change b4 you add fish cause the nitraates are realllllllllly high now.

[Bal]

Yep. Great, isnt it?

My 136 cycled in nine days with a fishless cycle, with some help from some established filter media. I was pleasantly surprised at how fast the whole process went.
B

[BigDaddy]

Filter media makes the process happen SO much faster.

I did a "true" fishless cycle (new equipment, no seeding) that took a little over 3 weeks.

[artw]

Really if you move a whole established filter over to a new tank you never actually have to "cycle" the tank...  thats what I do

[ambushman2j]

then add a new filter to your old tank and that filter will soon be chalked up with the good stuff too