Skip to content
Colombo KH Test

Colombo KH Test

by Colombo
£6.99 - £6.99
£6.99
£6.99 - £6.99
£6.99
The Colombo Pond GH Test Kit measures the general hardness of pond and aquarium water with accuracy.


The best possible health of your fish will be ensured by routine testing of the water quality in your pond.


Testing the water with a GH test kit is the only technique to determine the GH level.
Regular testing will stop low GH damage, especially in new ponds.


There are 40 tests in the Colombo GH Pond Test Kit.

Is delivery free?

We offer free delivery on the majority of our products over £50. This excludes live fish and bespoke filters. Delivery to UK mainland addresses is £3.95 as standard, or £6.95 for express.

How do I return a product?
Get in touch via email or phone and let us know your problem, we will then help as much as possible. A postage address will be given for you to return the product back to us, and postage will be refunded where applicable to our terms and conditions, which are in line with consumer rights.

At Steel City Koi, we offer a wide range of safe and secure payment options when shopping with us.

Accepted payment methods:

Debit/Credit Cards (Inc American Express)

BACS (for faster dispatch of products) please get in touch for this

Cash upon collection *only for live fish

Pay Later options currently include Klarna and Clearpay