Colombo PO4 Test (Phosphate)
Colombo PO4 Test is a liquid drop test kit for measuring phosphate (PO4) in pond and aquarium water. Ideal for monitoring nutrient levels and helping to manage algae growth through accurate, easy-to-read results.
£12.95
In stock
Product Description
High phosphate levels can fuel blanket weed and green water. The Colombo PO4 Test (Phosphate) helps you measure phosphate accurately, so you can take action before algae takes hold.
Designed for ponds and aquariums, this liquid drop test gives clear, colour-chart readings to show how much phosphate is present in your water.
Why test for phosphate?
Phosphate (PO4) builds up from:
- Fish waste
- Uneaten food
- Organic debris
- Source water
Left unchecked, it encourages nuisance algae. Regular testing helps you spot rising levels early and adjust feeding, filtration or water changes accordingly.
What’s included
- Liquid drop test reagents
- Test tube
- Colour comparison chart
- Instructions
When to use it
- During algae outbreaks
- After increasing feeding
- When stocking levels change
- As part of routine monthly water testing
Good practice & safety
- Rinse the test tube with pond water before and after use.
- Store reagents cool and out of direct sunlight.
- Keep out of reach of children and pets.
If you’re managing nutrients carefully, the Colombo PO4 Test gives you the numbers you need to stay in control.
Delivery Details
Delivery Charges
We offer two simple delivery options:
- Free shipping on all orders over £75
- Flat rate of £3.95 for lighter parcels on orders under £75
- Flat rate of £5.50 for heavier parcels on orders under £75
All deliveries are sent via Royal Mail, ensuring reliable and trackable service.
Delivery Times
Orders are usually dispatched within 1–2 working days. Once shipped, Royal Mail typically delivers within 2–4 working days. Please note that during peak times or in the event of postal delays, delivery may take slightly longer.
Delivery Locations
We currently ship to UK addresses only, including mainland UK and Northern Ireland.
Questions?
We’re here to help. If you have any questions about your delivery, email us at mskoiltd@outlook.com and our customer service team will be happy to assist.
Free delivery on orders over £75
Enjoy free standard delivery when you spend £75 or more.
Easy
Returns
Hassle-free returns if something is not quite right.
Same Day Dispatch
Orders placed before 2pm are dispatched the same day.
Dedicated Support
Friendly support whenever you need help or advice.





