ReefBum

Advanced Reefer
Location
Warren, VT
Rating - 100%
71   0   0
I added fish 2-3 weeks after using just dry rock for my 187 gallon tank. I jump started the cycle with some nitrifying bacteria and ammonium chloride and added fish when it was done. I waited another month or so before adding some corals.
 

ReefDiver

Experienced Reefer
Location
westchester
Rating - 100%
18   0   0
You're asking how long does it take for the bacteria to build up in the rock to support the bio load you want to carry. And the answer is that it depends. It depends on what you put in to seed the bacteria, either bottled culture or something more traditional like a decaying shrimp, and how much. You can measure nitrate/nitrite/ammonia as you go and get good levels, but if you substantially increase bio load by adding fish, it will take a while for bacteria volumes to catch up to the load, and your levels can spike. So take your time.
 

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