I am new to this site but have been reading all the articles and messages on tank cycling.
I have a 64Ltr tank been cycling for about 6 weeks (fishless) using fish flakes. I had a ammonia spike then dropped off to 0ppm. Nitrite went through the roof above 3.3 and so did nitrate. Following advice that high levels can stall the tank I did a big water change (50%). But levels now have stayed the same for about 2 weeks now Ammonia 0.6 - 1.2ppm Nitrite 0.3 - 0.8ppm Nitrate 5 - 10ppm ph 7.5 - 8
Test carried out using nutrafin master test kit
I have added an air stone and cranked the temp up to about 30 degrees
There is a few plants in the tank and one oranament.
Can anybody help as the levels have been stuck like this for a while and my wife wants to use ther tank before christmas.
Do a water change and get a bottle of ammonia to cycle with. Fish food isn't really good enough on its own as you can't dose or top up accurately and it's designed to resist decay into ammonia. You need to get to the stage where the filter can process a dose of 3-4ppm ammonia into nitrite and then nitrate within about 12 hours. As your nitrate level is so low it's clear that not much ammonia has been generated or processed so the tank is unlikely to be able to support fish without any ammonia/nitrite spikes as it stands at the moment.
thanks for the reply just ordered a bottle of ammonia should i change the water again or just leave it. The only reson i changed the water the first time was because the nitrites and nitrates were so high (off the scale). These levels have slowly started to drop well nitrites anyway but the ammonia has stayed where it is!
Aha....I think I know what the problem is. While a warm environment is helpful when cycling, 30C is too high and at that level, the bacteria are less efficient and may start to die off. Reduce the temperature to 28C.
Thank you very much i have now reduced the temperature just waiting for it to stabalise to make sure i have got it around 28 degrees. The ammonia level has stayed about the same but the nitites are falling but nitrates are going up.
I have ordered some ammonia so just waiting for that to turn up then i'll be ready to start again, just got to wait now for another 6 weeks for it to properly cycle then hopefully be in buisness.