Yes, a pond can function perfectly well without a pump or filter, provided it is set up correctly. The secret lies in a natural balance, where the right substrate, plants, and bacteria do all the work.

Important requirements for a pond without a pump and filter:

-10 cm of porous Pond substrate the bottom
This ensures strong rooting of Aquatic plants provides a large surface area where beneficial bacteria can attach themselves.
-Oxygenating plants
Produce oxygen and absorb nutrients, preventing algae from taking hold.
Water lilies
Provide shade, keeping the water cool and thus clear.
-Marsh plants
Absorb excess nutrients, thereby purifying the water.
-Beneficial bacteria
Break down waste and sludge, keeping the water naturally clear.

View the step-by-step guide for a pond without a pump

You can prevent algae by setting up your pond naturally from the start. Place a 10-cm layer of porous substrate on the bottom. This allows plants to root firmly and provides a place for beneficial bacteria to attach themselves. Also, place plenty of oxygenating plants (loose and in baskets) in the pond: they remove nutrients, combat floating algae and thread algae, and prevent algae from returning.

To keep the water clear, add BACTA CLEAR INSTA CLEAN 2 to 3 times a year. These loosen bottom sludge and remove floating debris, so your pond stays clear without a pump or filter.

Read more about controlling algae

Yes, in almost all cases you Pond substrate . You sometimes hear—often from pond expert Ada Hofman—that substrate isn’t necessary. That’s only true for true natural ponds that already have a natural bottom, such as ponds or pools located directly in nature.

With a garden pond that you build yourself, the situation is very different. It always has a bottom made of pond liner or a plastic Pond tub. Without substrate, plants cannot root properly there, and beneficial bacteria have nowhere to attach themselves. The result: plants slowly die off, bacteria disappear, and the pond becomes completely unbalanced.

With a layer of about 10 cm of porous Pond substrate, you give plants a solid foundation to root in and provide bacteria with the right environment to attach themselves. Only then can your pond naturally maintain its balance and remain clear.

View Pond substrate

Pond bacteria essential for a healthy and clear pond. They break down organic waste, such as plant debris, fallen leaves, and fish waste. This waste sinks to the bottom and forms a layer of sludge. If left undisturbed, it creates an ideal food source for algae.

Our BACTA CLEAR consists of two specially selected bacterial strains, developed in the laboratory based on our own concept. These bacteria loosen the bottom sludge and remove floating debris, keeping your pond clean and preventing algae from taking hold.

View Pond bacteria

It’s not so much about a single specific plant, but rather the right combination of different plant groups. Only together can they ensure a healthy, clear pond. Important groups include:

-Marsh plants: absorb nutrients and purify the water.
Aquatic plants: contribute to filtration and natural balance.
Water lilies: provide shade and reduce algae growth.
-Oxygenating plants: (loose and in baskets) – combat floating algae and thread algae and prevent them from returning.

View the complete 6-step plan for your pond

Absolutely! Our advice always centers on creating a natural pond: a pond that stays clear and healthy thanks to the right plants, substrate, and bacteria, without relying on technology or a lot of maintenance. With the right design, you can ensure that your pond maintains its own balance.

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