Tunze Auto top-up

Our Bestsellers

In 1985 TUNZE invented the “auto top off” system. Critics initially derided the idea as
an invention for lazy people… They missed the main point: delicate aquatic life
requires a constant osmotic pressure. The Osmolator - short for Osmotic Regulator
- provides this in one easy-to-install complete Kit. Only the Osmolator® provides the
level of safety and reliability that comes with 25 years of TUNZE know how.

Why our delivery is awesome!

Just a few reasons why Charterhouse are the industry leaders

1 Hour Delivery Slot

We provide a 1 hour delivery slot for all Premium Next Day delivery services. No more waiting in all day.

SMS And Email Notification

Your delivery slot will be text and emailed to you. You can then submit a different day or request the parcel is left with a neighbour.

Weekend Deliveries

We now offer deliveries on both days of the weekend. These services can be selected at checkout.

Free Shipping Over £50

Spend over £50 on your order and qualify for free shipping. Next day and timed services available.

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Pay by Finance

We offer flexible monthly finance options. Credit is subject to application and status.

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Reward Points

As a thank you, we run the Charterhouse Points scheme. Earn points on every order.

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