Sanity checking my numbers
Hi folks, just finished testing my water (twice) during my cycle and want to check if my readings are making sense.
Background: I spent 1 week attempting to dry start my tank before deciding to flood it. It has now been 6 days since flooding. So soil has been wet a total of 13 days. At time of flooding I added half a bottle of Fluval biological enhancer (enough for a 75g tank).
Yesterday, measured immediately after 50% water change, after c02 and lights had been on 3 hours:
NH4 ~ 0.2 ppm
NO2 ~ 0.01 ppm
PH ~ 7
Today, measured after C02 and lights had been on 3 hours:
NH4 undetectable with test kit
NO2 < 0.005 ppm (barely detectable)
PH ~ 7
PH ~ 7.5 (untreated water from tap)
NH4 undetectable (untreated water from tap)
Sooo, does this mean my tank has cycled? Or am I not getting enough ammonia into the system to start the process off? My substrate is 40 liters of Tropica aqua soil. My tank is heavily planted, so could the plants be absorbing all the ammonia and preventing the cycle?
Also, I was expecting a larger PH drop given the amount of C02 I'm pumping in (4 bubbles per second, and the bubbles are traversing the length of the tank).
Is it possible for a tank to cycle this fast? Yes my NO3 and hardness measurements are conspicuously absent. I'm going shopping for more test kits this weekend.
On the available data though do you think it is safe to add some ottos and amano shrimp?