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Colombo Phostphate Test

Colombo Phostphate Test

by Colombo
£10.99 - £10.99
£10.99
£10.99 - £10.99
£10.99
The Mastertronic is compatible with the Colombo Phosphate Test (marine).


When used with the Focustronic Mastertronic, 5 sets are required to load 20ml into 2 vails.


(ranges from 0 to 4 mg/l, but is best above 0.2 mg/l.)


Colombo's phosphate test is simple to use, in part because of the straightforward usage instructions and the test's readability.

For corals and algae to grow, the phosphate level must be regularly measured.
As phosphates are nutrients for algae and corals cannot survive high phosphate levels, this must be measured.


40 tests maximum per set when using a manual

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