the tank has been up and running for about 3 weeks. I just added the canister filter to the system. I will absolutely check all of my levels before adding any fish. I have kept saltwater reef tanks for years. I am new to planted freshwater. I have found there some what of a learning curve even in the first 3 weeks.
i thought since you just added the filter that the tank was just started. Is saltwater more difficult than planted freshwater?