I came home last night to a pod massacre. I was heartbroken. It was that stray emotion between sadness and anger. What did I do wrong?

They had just started to breed, the numbers were increasing, the water was staying clean but green. All was good. And then, mass death. Little pod bodies floating about, mocking my efforts. :(

The only change was the heater. I was worried about the low temperature, so added a small heater to the tank. I made a horrible rookie mistake... I didn't clean it first. I clean all my own equipment before storage, but this wasn't mine. Long story short, I put bug killing stuff in my bug breeding tank. :(

I'm discouraged, for sure. But I'll try again. It was just getting good. I'll clean the tank this weekend, and the heater, and prepare to start fresh.