Hi all, I have a 2.5 gallon nano tank. It's currently stocked with the help of my LFS. There are two trochus snails, one peppermint shrimp, one gsp, and one mushroom. It cycled for two months. However, I woke up to my tank being extra foamy on the top, no actual foam, but a lot of the bubbles were not popping and collecting on the sides. I did an ammonia test from API and it came out to be 2.0 pp which I was shocked. At that pp wouldn't everything be dead? I did a water change two days ago so I'm a bit confused. My seachem alert that I have on in my tank says there 0 ammonia. Everything is acting fine in the tank, and the corals have been a little annoyed with the water change and the overall change from the lfs to my tank, but the mushroom isn't spitting its guts out and the gsp is still opening up some. I added some more bacteria just in case.
Edit: Thanks sm for all the information! I definitely feel better and I upped my surface flow and that seems to be making a difference with the film now!
Edit: Thanks sm for all the information! I definitely feel better and I upped my surface flow and that seems to be making a difference with the film now!

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Thank you!

