I have a 12 gallon tank fully planted and loosing fish. I have not been testing the water or doing water changes for quite some time. I’m using pressurized CO2 and dosing PPS pro as per the instructions from the manufacture. At first I thought I was gassing them and my drop CHECKER just wasn’t working so I turned the CO2 completely off. Came home from work today and found another dead fish so I decided to check my water and found everything perfect but nitrates extremely high. Can this be the Ferts that I’m dozing? I have another tank that I dose the same solution with and the parameters are Good. See pictures attached. I could really use some advice thank you guys and gals.
One more thing: I have four or five Amano shrimp that will not seem to come out of hiding since I started adding fish. They used to run the tank now they only hide.Could that be a sign of something wrong as well? The fish I’ve lost are neon tetra’s and zebra Danio’s. I’ve also lost a handful of Ottos but I think that’s just because they like to die.