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Learn how to properly cycle an aquarium filter before adding fish — a quick, step-by-step trust-builder for healthy tanks in just 2 minutes. This video covers fishless cycling, establishing beneficial bacteria, monitoring ammonia.

While leaves in your local forest are unlikely to have come into contact with any herbicides or weed killers, leaves collected in your local park or gardens may well have done. Herbicides can be acutely toxic to aquarium fish, which will exhibit signs of poisoning within minutes.

Ammonia build-up in ponds is a silent killer that can devastate fish populations and destabilize your entire aquatic ecosystem. Whether you're managing a koi pond, wildlife pond, or ornamental water garden, tackling ammonia in a pond is critical.

To reduce ammonia in an aquarium, start by addressing the root causes. Avoid overstocking your tank and feed fish sparingly to prevent excess waste. Regular water changes—typically 25–30% weekly—help dilute toxins and maintain balance.

It can be highly rewarding when your fish start to have babies or lay eggs. The sight of lots of happy and healthy fish fry populating your aquarium can bring a lot of satisfaction and joy, but it can also have its pitfalls.

Pond drum filters are perfect for large to very large setups, and will help provide optimum water conditions for your koi and other pond inhabitants. Above are listed the top 3 best drum filters for ponds for 2025.

Herein are listed the top 5 best pond box filters for 2025, based on Real Aquatics 2024 sales and reliability data from Real Aquatics outlets on eBay, Amazon and official websites.

Using RO water helps maintain stable water chemistry, reducing fluctuations that can stress marine creatures. Many reef keepers mix RO water with reef-specific salt blends to create an optimal environment that closely mimics natural seawater.

RO water is commonly used for drinking, cooking, marine fishkeeping and other industrial applications, and is especially useful in areas where tap water contains high levels of dissolved solids or pollutants.

When placed in the aquarium, the holiday block gradually dissolves, releasing food particles (typically small pellets) into the water over a set period, typically ranging from a few days to a couple of weeks. If you're planning to use a holiday block or an automated feeder it's a good idea to test it in advance to ensure it suits your aquarium's needs.