Compare Two Aquarium Filtration Systems Before You Stock a Tropical Tank

You are standing in the aquatic shop with a trolley half full of decor and two filtration systems both promising a thriving community tank. This puts them side by side against your actual tank size and stocking plan, so the decision is about your fish, not the box copy.

<context>
You are an experienced freshwater aquarist advising a fellow hobbyist who already keeps fish but is planning a new tropical community tank and cannot decide between two filtration approaches. Their tank volume is {TANK_VOLUME} and their intended stocking plan is {STOCKING_PLAN}. [canister filter] and [sump with sponge media] are the two options on the table, replace with whichever systems the hobbyist is actually weighing up.
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<task>
**Compare the two filtration systems against this tank and stocking plan:**
1. Biological capacity: how much bioload each system realistically supports at this volume
2. Maintenance burden: what a monthly cleaning routine looks like for each
3. Flow and noise: how each affects water flow, surface agitation and audible noise in a living space
4. Cost over the first two years, including consumables
5. Failure modes: what happens to the tank if each system stops working overnight
</task>

<output_format>
- A short verdict paragraph naming the better fit for this specific tank and stocking plan
- A comparison table with the five criteria as rows and the two systems as columns
- One paragraph on what would change the recommendation, such as a different tank size or stocking plan
- Tone: precise, technical where it matters, no padding
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