The Colombo Nitrite Test Kit contains all you need for testing the level of harmful nitrite in ponds and both freshwater and saltwater aquariums. The Colombo NO2 Test Kit comes complete with test tube and liquid reagents to provide accurate results for 40 tests.

Nitrite (NO2) is produced out of ammonia by the nitrifying bacteria in your aquarium or pond. As nitrite is highly toxic to all water life, it is vital that the nitrite level in the water is zero. The best way to harbour these bacteria is in a biological filter. A new 'clean' filter needs time to have a sufficient number of bacteria to grow inside it. You can give this growth a boost by adding the right type of bacteria from the moment the biological filter is started. For all types of water, Colombo has the right product with the right bacteria.

An optimal nitrite level in all kinds of water is simply 0 mg/l. When the nitrite level is 0.5 mg/l or higher, it means that aren't enough bacteria present and thus it is recommended to use a Colombo bacteria culture. Use Colombo AquaCare or Colombo BiClear for your pond to bind and detoxify the ammonia; in this way also the production of nitrite from ammonia is blocked. At a nitrite level of 1.0 mg/l, nitrite can become toxic, and thus it is wise to first refresh 25% of the water. At nitrite levels of 2.0 mg/l and higher, you should directly refresh 50% until the nitrite level is 0.5 mg/l or lower.

Cut Off Time

Order by 2pm for same day dispatch - Monday to Friday (Excluding Bank Holidays)

Please Note: Direct/Palletised Delivery items may take longer.

Orders Under £49

Standard Delivery (2-3 working days) - £3.99
Express Delivery (1-2 working days) - £5.99.

Orders Over £49

Standard Delivery (2-3 working days) - FREE!
Express Delivery (1-2 working days) - £2.99.

Timeframes are for standard mainland UK addresses only excluding NI, Scottish Highlands & Islands.

Palletised Deliveries

Some large oversize products, typically items weighing more than 30kg, may require delivery via pallet and as such will arrive as a kerbside delivery only. The drivers in these instances are unfortunately not permitted to assist with the pallet beyond the drop off, and cannot aid in bringing packages into the property.

Pond Planet will contact you to book in delivery on a suitable working day. Delivery will generally take place between 9am and 5pm. To ensure there are no delays with delivery, please include a contact number when placing the order.

Pond Plant Deliveries & Surcharge

Pond plants are subject to a £5.00 delivery surcharge. Pond plants are sent directly from our supplier to make sure the plants you receive are fresh and in great condition. There is no limit on how many you can order for a single delivery charge. This charge is in addition to any other carriage costs for items sent directly from Pond Planet. Please allow 5 -10 working days for delivery.

Returns

If for any reason you are not satisfied with your purchase from Pond Planet, you may return the product(s) to us within 14 days of the purchase date for a refund or exchange.

Goods must be returned in perfect and unused condition, in their original packaging. The buyer must ensures that the goods are securely and adequately packed to avoid damage and the purchaser pays all postage costs. We recommend that products are returned by recorded delivery or by a carrier that requires a signature. Pond Planet accepts no responsibility for goods returned to us unless signed proof can be provided.