How to Cycle a Fish Tank (with Pictures) - wikiHow

With fish in tank while cycling in process use Prime and do 25% to 30% water changes every 48hours
Photo provided by Flickr
This is the other most popular way to cycle a fishless aquarium. Simply add chemical ammonia to the aquarium water and let the process cycle. The benefits of this method are that the tank does not cloud up with a bacteria bloom and you don’t have to look at an aquarium with dead cut up shrimp or fish on the bottom. Plus you can somewhat accurately determine the amount of ammonia being added to the tank. The drawbacks to this method are that the proper ammonia solution can be hard to find and when you do find an ammonia solution you may not be able to easily determine its concentration.
There is a lot more work load because of the frequent partial water change required to sustain the fish through the tank cycle.
Photo provided by Flickr
14 days ago i got a 29 gallon fish tank new from petco i had a 24 gallon that i got at a yard sale nothing but problems. when i got the 29 i put all the stuff that i had in it in the 29. this was the 21st of July 2016. my tap water has ammonia in it. tap water readings is ph 7.2 Ammonia 0.50 nitrita 0pmm nitrate 5.0 tested the tank on the 24th Ammonia was 0.25 the 25th was 0.50 26th was back to 0.25 today i tested the tank Aug 4th 2016 Ammonia still .25 nitrite 2.0 nitrate is 20pmm i am doing a fishless cycling. is my tank working on the cycle or am i at a stall. where all that is in the tank is water and ammonia for a fishless cycle).
Photo provided by FlickrIf you're cycling with fish, add water (same temp) and use Prime to detox any ammonia in the tank
Photo provided by FlickrEnsuring that your tank is cycled is vital to the health of your fish and your regularly scheduled water changes
Photo provided by Flickr
Your tank is fully cycled once nitrates are being produced (andammonia and nitrite levels are zero). To determine when the cycle hascompleted, buy appropriate test kits (see the section)and measure the levelsyourself, or bring water samples to your fish store and let themperform the test for you (perhaps for a small fee). The cycling processnormally takes anywhere from 2-6 weeks. At temperatures below 70F, ittakes even longer to cycle a tank. In comparison to other types ofbacteria, nitrifying bacteria grow slowly. Under optimal conditions,it takes fully 15 hours for a colony to double in size!Of course, there are many variations on the above that work. However,it is a bit difficult to give an exact recipe that is guaranteed towork. It is advisable to take a conservative approach and not addfish too quickly. In addition, testing the water to be sure nitratesare being produced eliminates the guesswork of determining when yourtank has cycled.Standard test kits measure total ammonia (ammonia plus ammonium)without distinguishing between the two forms. The following chartgives the maximum long-term level of ammonia-N in mg/L (ppm) that can beconsidered safe at a given temperature and pH. Again, note that a tankwith an established biological filter will have no detectable ammonia;this chart is provided only for emergency purposes. If your levelsapproach or exceed the levels shown, take emergency action IMMEDIATELY.Should ammonia levels become high during the cycling process,corrective measures will need to be taken to prevent fish deaths. Most likely, you will simplyperform a sequence of partial water changes, thereby diluting ammoniato safer concentrations.In addition, if your tank is cycling and has fish in it, theelevated ammonia and nitrite levels are almost always fatal to thesome, if not all, of the fish before the biological filter is up andrunning if you do not perform regular, frequent, small water changesto keep these toxin levels low.