my ph is low?
I havent tested my water in like 3 months. This tank has been up and running ever since september and I didnt really add many fish. Just have 3 ottos and 5 corys. At least 14 blyxa japonica plants, watersprite and a crypt for my 12 gallon tank.
I do waterchanges every week 45% and dose using the EI method and run pressurized co2 for the last 2 weeks (injected via powerhead).
Before with my DIY co2 the ph would be around 6.8 or 7.5.
But now here are my results.
But what is up with these numbers? NO2 is bugging me because that number should be up if the tank is cycled right? Also I have a drop checker in the tank with its own mixture fluid from GLA, is showing Co2 (located 1.5 inches from the waterline on the other side of my power head)at optimal.
I tested my tap water just incase:
any help would be appreciated.