A lot of fluctuation is not good for a tank or its inhabitants. I'm a bit perplexed as well. Moving fish in and out of a new tank can really keep things out of balance. I'm not sure how a powder brown can be mistaken for a powder blue, was it unhealthy when you got it? Do you have a way to post pictures?
I'm not coming down on you, I don't know you. So take this as friendly advice and not condescension. Patience my friend. In this hobby, slowing it down, taking a step back and waiting for things to balance out is always a better policy. Its better for your wallet and better for your tank inhabitants.
For example, my tanks ALWAYS looked better when I went on vacation. The reason was, I wasn't sticking my hands in there! It just found its own rhythm. My new set up has taken almost 10 months to get running. Every time I try to rush it, something bad happens.
Again, not trying to lecture you. It just seems that you have quite a lot going on. Quite a lot of change in a short period of time. If I didn't have 2 stinking babies, I might have more free time to swing over and give you a hand. Best of luck.