For the last couple of days I've had Echo in a quarantine tank on my desk. He was severely bloated, as he began to pinecone I realized he had internal breakdown syndrome (aka dropsy). He was being treated with epsom salt and Indian almond leaf extract while being fasted but he just couldn't fight it.
I'm utterly confused, his main tank was on the exact same cleaning schedule as Kaze's and had the exact same filter. It was cycled and - as far as I knew - stable. I must have missed something...
I'm so sorry for that.
You angry, flarey, poofy little sod. Swim in peace; me (and even Kaze) will miss you.