With an aquarium calculator, you can estimate heater size and temperature level targets

https://fish-tank-capacity-calculatorohmk464.publishlane.com/posts/15-up-and-coming-aquarium-tank-size-calculator-bloggers-you-need-to-check-out

With an aquarium calculator, you can approximate heating unit size and temperature level targets. Make more secure options for tropical, cold-water, or planted tanks.