Freshwater fish swimming through a planted aquarium

Aqualume / Aquarium knowledge

Aqualume Blog

Clear, practical reading for people who keep and source aquarium equipment. Browse guides on aquascaping, CO₂ delivery, filtration, heating, algae, and water quality.

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Tell us which article or aquarium topic prompted your question. Include the tank type and any measurements you already have if they help explain the issue. For product sourcing, mention the equipment category and project requirements. We will review your message and reply by email.

If fish behavior changed suddenly, include when it began and what else changed in the tank. A brief note about the filter, temperature, and recent water tests is more useful than an assumed diagnosis. For equipment questions, describe the application you are planning rather than guessing at a model.

Fish swimming in a planted aquarium below the water surface
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