Fish continuously create ammonia, which is released, among other times, when they take in oxygen through their gills.
In a biological filter, two different species of bacteria work together to convert ammonia into nitrates via nitrites.
Those in the first group turn ammonia into nitrites, while those in the second turn nitrites into nitrates.
Since oxygen is required for these two processes, it is crucial for the water in the filter to be oxygen-rich for maximum filter effectiveness.
Both types of bacteria are present in very significant levels in Bactoplus Filter Start.
The products receive an addition of more than 800 million bacteria per millilitre during manufacture.
Use these items while starting the filter, following maintenance, and whenever there is a water quality issue.
50 ml per 1000 litres of water are needed to start the filter or in cases of excessive ammonia or nitrite levels.
25 ml per 1000 litres of water after filter cleaning or when fresh water has been added.
Monthly maintenance dose of 25 cc per 1000 litres of water.
The stopper has a 15 ml capacity.
The pond's water temperature must be greater than 10 °C.
After administration, the UVC steriliser and ozone must be turned off for at least 24 hours.
offered in 1, 2, or 5 litre sizes.
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