The following table sets out the relative merits of glass and acrylic aquariums.

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The heron is one of nature’s most beautiful sights.  It stands tall and elegant with a striking colour pattern, and in flight looks like it has the wings of an eagle.  As a fisherman, it has great skill - hours of perfectly still patience followed by stabbing its prey in a flash with a snap of the neck.

However, that is in a natural setting.  When a heron visits a goldfish pond, it doesn’t need any patience.  There is crystal clear water with brightly coloured goldfish that can be picked off at will.  No need to wait for a fish that is the same colour as the murky water it is swimming in.

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Crystal clear water that looks like it has been polished can be achieved with proper filtration. Getting it wrong, on the other hand, can lead to cloudy, dirty, smelly water that will only do harm to your goldfish.

With so many different types of filter available - each with very persuasive marketing all over the packaging - it is hard to know which is the right one for any given goldfish tank.

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Testing water quality in a goldfish aquarium or pond is an essential element of routine maintenance. It provides advanced warning of problems, reassurance that problems are less likely, and elimination of possibilities when diagnosing a problem.

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Winter can be hard on a goldfish pond, and it is essential to start preparing for its onset a couple of months beforehand. Use the following checklist to ensure a goldfish pond is ready for what Winter can throw at it.

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A lush green and red underwater world for goldfish to explore, hide, rest and play can really make an aquarium stand out. The same is true for smelly rotten plants, but for totally different reasons.

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Toxic waste can quickly build up in an aquarium with potentially dangerous consequences for goldfish. It is important to keep the water clean and healthy with regular weekly water changes.

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The idea of a crystal clear goldfish pond, with birds and butterflies flitting about, and the gentle, rhythmic, therapeutic sound of babbling water soothing your mood can be very tempting. The idea of a green, smelly hole full of algae, dead leaves and dead goldfish can be equally off-putting.

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