How to protect your goldfish pond from invasive plants

Cartoon of a plant chasing a goldfish

This is a guest post from Ricky at

Remember how Seymour thought Audrey II was the most amazing plant he’d ever found in Little Shop of Horrors?

If you haven’t seen the film, spoiler alert – the plant starts eating everyone.

Of course, it’s unlikely that invasive plants in your goldfish pond are likely to commit murder! But they could be harmful to your other plants, taking over the living space and restricting their ability to grow and feed.

So, how do you keep these nasties out of your pond?

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Keeping goldfish in a pond

Goldfish Ponds Part 7: Adding and keeping goldfish

When you have finally reached the stage where you are ready to add goldfish to your pond, it can be very tempting to rush out and buy a large selection of fish immediately!

However, it’s important to handle the introduction of your goldfish slowly, to avoid placing too much of a strain on the natural ecosystem of the pond, and allow the pond to mature and acclimatize.

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Adding plants and fixtures to a goldfish pond

Goldfish Ponds Part 6: Adding plants and fixtures

Once your pond is built and watertight, you can start adding the goldfish pond equipment, fixtures and eventually, live goldfish pond plants!

It may prove helpful to only half-fill your pond with water until after you have situated your decorations and fittings, in order to provide easier access to the bottom of the pond and allow you to see everything that you need.

Bear in mind that some goldfish pond equipment such as filters and pumps may not be able to “run dry,” i.e. function without any water passing through them, so you will not be able to test everything out fully until the pond has been filled.

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Goldfish Pond Equipment

Goldfish Ponds Part 4: Pond equipment

There is much more to keeping the occupants of a goldfish pond happy, healthy and thriving than just adding water, plants and food!

In order to provide for all of your goldfish’s needs, you will need to install a range of equipment and ornamentation, both to make the pond more visually appealing and to ensure that the pond is a suitable home for your fish.

Vital equipment such as filters and air pumps come in a range of different sizes and styles, and the type you ultimately choose will be dictated by your pond’s own needs, such as the size of the pond and the number of fish you will be keeping.

Here is our list of 12 essential pieces of goldfish pond equipment.

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Goldfish Pond Size: Choosing a goldfish pond size

Goldfish Ponds Part 3: Goldfish pond size

When you have got as far as picking the location for your pond and choosing between the different types of pond available, the next consideration is goldfish pond size. Obviously the size of your pond will dictate to a great extent how many fish you can actually keep within it, but there are other factors to bear in mind as well.

When browsing for pre-formed pond molds or working out exactly how big the volume of your pond should be, it is always important to calculate the actual volume of your pond rather than just guessing a rough goldfish pond size.

The different shapes and sizes that ponds come in can prove misleading, and lead the fish keeper to assume that their pond’s volume is actually larger than it really is at a glance.

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