If there is something wrong with your fish; they look ill or are dying, or there are water quality problems, we strongly advise that you test your pond water.

Use the images and descriptions below to determine what's wrong, then click through for treatment advice.

Self Contained Water Feature with Algae

A free standing, fountain water feature with brown/green water running through it

What does it look like?

Algae/blanket weed on the features
Green water
Stringy plant matter reducing water flow

Hand pulling thick green plants out of a water feautre

What are the fish doing?

Not suitable for aquatic life

What should I do?

Remove large matter from the feature
Do a partial water change to dilute any water issues which may have caused the problem.
Treat with your chosen treatment – as recommended below

See which treatments we recommend >

Why does this happen and how do I prevent it?

Blagdon Feature products should not be used to treat water features in ponds where there is aquatic life present.

Algae is present in all water so it is likely that you will experience algae growth or green water in any water feature if left untreated. Preventative treatments can be used to help stop algae growth all together or if you are particularly prone to algae problems, there are fast acting solutions to help get your feature back to its former glory.

It is important to regularly clean your self contained water feature to keep it functioning properly and ensure it is an enjoyable addition to your garden. If algae is a particular problem consider placing the feature in a more shaded position.

A combination of Feature Clean Away as an ongoing preventative and Feature Lavender Scent to reduce unappealing smells will help keep your feature looking clear all year round