Treats: White spot, Trichodina, Costia and Chilodonella.
When to use?
When fish show symptoms of a parasitic infection, including white spots along the fins and body, flicking and rubbing, gasping at the surface, or an opaque film over the body.
Formaldehyde is highly effective at treating parasites due to its ability to penetrate through the mucus layer, reaching those parasites which would otherwise be protected from alternative bath treatments. It can also be used in conjunction with Malachite to treat protozoan parasites more effectively.
How to use?
Do not use with orfe, rudd, tench or sturgeon/sterlet.
Do not use if the water temperature is above 30°C.
Do not use in hot, humid, thundery conditions.
Do not mix medications, other than combining with Malachite.
Q: How do I mix Formaldehyde & Malachite Green? A: If you are going to use these 2 products together then simply follow the instructions for each individual product, there is no need to adjust the dosage or to pre-mix the 2 treatments, you can simply apply one product followed by the other at the dosage on the instructions. Alternatively, for ease of use we would recommend using our pre-mixed F-M-G.
For common frequently asked questions, click here.
Active Ingredients: Formaldehyde 30.0 % w/v
250ml, 500ml, 1 Litre & 2.5 Litre
Let us calculate your dosage for you!
To make the process of using our products even easier this handy dosage calculator tells you the amount you will need to put into your system. Please ensure you also read the instructions and warnings that are written on the bottle/pack label.
Note: This calculator does not take into account water displacement such as that caused by substrate, ornaments, water features and plants etc. Therefore, please adjust the calculated volume accordingly.
I know my system's measurements and want to:Calculate my volume
10 ml per 150 gallons (682 litres). If necessary, perform a partial water change and repeat the treatment 7 days after the previous dosage. The treatment can be safely repeated up to 4 doses.
* Always follow the instructions on the label. This calculator is intended to be used only as a guide to how much product you need to buy to treat your system. It does not take account of displacement caused by gravel, rocks and ornaments etc and does not include the volume of any external filtration system. NT Laboratories Ltd. will not accept any responsibility for inaccuracies or misuse of this guide.
Keith Holmes - Koi Waterbarn from Knockholt, Sevenoaks
Koi Water Barn and NT Labs have a long history of working together, we feel that the products in the Koi Care range offer our customers a quality product at a realistic price. This is backed up by extensive research and development that is carried out at the NT Labs HQ located in Kent. They are not far away from our shop at Coolings (Knockholt, near Sevenoaks), this is an added bonus for our customers as they are buying from a local UK based company.