Fishless Cycle

Drew31

Active Member
Member
Messages
109
Reaction score
32
Experience
3 years
3/1 begin fishless cycle of 75 gallon aquarium. Add 3tsp Ammonia. 3/12 I finally get Ammonia at 0. Add 3 more tsp. Have added 3tsp every other day since. Nitrite reading every day has been .25 Today, I get Nitrite reading of 0. WAY sooner than I expected. Now, I did seed my filter with sponges from an existing tank so perhaps that has significantly sped up the Nitrite cycle? I was just expecting that to take much longer given that the Ammonia part took 11 days.

Thoughts??

Am I good to add fish? I'm going to carry on a few days to make sure this continues
 

flyinGourami

Well Known
Member
Messages
2,481
Reaction score
3,090
Location
My house
Experience
Just started
Well, if you can get the ammonia levels to zero, nitrite to zero, and see a little more nitrates over the course of 12-24 hours then you should be okay. Basically, if the bacteria in your filter/tank is able to convert ammonia to nitrate over the course of 12-24(I would do 12 since I think that's safer) hours then you can add fish. However, before adding fish, you should do a water change to lower the nitrate levels unless they are already very low, but I don't think so since you state you added 3 tsp every other day. You probably already know this but make sure to still monitor the water parameters after you add your fish :)
 
  • Thread starter
  • Thread Starter
  • #3
OP
Drew31

Drew31

Active Member
Member
Messages
109
Reaction score
32
Experience
3 years
Yes, thanks. I'm at 0 Ammonia 0 Nitrite after 48. Just added 3tsp so will probably check in morning to see if I'm there. If so, I might be good to add...just didn't expect it to go so fast.
 

flyinGourami

Well Known
Member
Messages
2,481
Reaction score
3,090
Location
My house
Experience
Just started
Okay, I think it went fast because you seeded the tank. I also had a tank that was cycled pretty quickly; I used a bacteria supplement and it was a fish in cycle(don't worry, they lived and I made sure parameters were taken care of). It took around 5-6 days.
 
  • Thread starter
  • Thread Starter
  • #5
OP
Drew31

Drew31

Active Member
Member
Messages
109
Reaction score
32
Experience
3 years
Ok...guess I'm glad I seeded it! Caught me way off guard today when I saw no purple!
 

New Threads

Follow FishLore!

FishLore on Social Media

Online statistics

Members online
115
Guests online
2,082
Total visitors
2,197

Aquarium Photo Contests

Aquarium Calculator

Top Bottom