What I'd do differently next time.

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1. I would have a single overflow with Herbie's silent overflow system.

2. I would feed the pipe from the overflow directly into the protein skimmer.

3. I would not buy any fish that require frozen food, due to nutrient issues.

4. I would have redundancy: two return pumps in case one failed, two heaters, basically take some steps to avoid a tank catastrophe.

5. LED lighting.