

Medication
FMC
For white spot disease, Costia & Chilodonella
- Gegen Weißpünktchenkrankheit, Costia und Chilodonella einsetzbar
- Kombination aus Formaldehyd und Malachitgrün
- Einfache Dosierung über das Teichwasser
- Erhältlich in zwei Verpackungsgrößen
Size wählen
Auf Lager · voraussichtlich bei dir 17.–22. November

FMC – for white spot disease, Costia & Chilodonella
Details
All About the Product
Product description
FMC – against white spot disease, Costia & Chilodonella
FMC is a liquid treatment for koi and suitable ornamental fish for white spot disease, Costia, and Chilodonella. According to the manufacturer, the active ingredient combination consists of 40% formaldehyde and 4 g of malachite green per liter. The treatment is carried out on days 1, 3, and 5 with 15 ml per 1,000 liters of pond water each time. During the treatment, UV-C and ozone must be switched off and good aeration must be ensured. On the 7th day, 20% of the pond water is changed. FMC is available in 0.5 and 1 liter bottles and, according to the manufacturer, must not be used below 10 °C.
Suitable for whom
🐟 For koi and suitable ornamental fish
🔬 For confirmed Costia infestation
⚪ For white spot disease
🦠 For Chilodonella
💧 For treatment via pond water
🌡️ For use at a water temperature of 10 °C and above
Advantages at a glance
- Can be used against white spot disease, Costia, and Chilodonella
- Combination of formaldehyde and malachite green
- Simple dosing via the pond water
- Available in two package sizes
- 0.5 liters for a calculated pond volume of approximately 10,000 liters
- 1 liter for up to 20,000 liters of koi pond
- Clearly defined treatment schedule
Available variants
⭐ 0.5 L
⭐ 1 L
Application and Dosage
Application
Dosage
What buyers say
What customers say about Koi-Area

Before you order
Frequently Asked Questions
When will it arrive?
Ships from Germany, usually within 2 to 4 business days. Individual items are reproduced upon order – in that case, it takes about 10 to 14 business days. The estimated delivery date is shown at the top of the checkout area.
How much is shipping?
Within Germany €5.90 up to 30.9 kg, tiered above that. To Austria, Belgium, Luxembourg and the Netherlands from €7.50, to Denmark from €13.90 – each tiered by weight.
Can I pick it up from you?
Yes, free in Mönchengladbach, Tomphecke 25. Monday, Wednesday, and Friday from 10 am to 5 pm. Just add it to your cart and select pickup at checkout.
I'm not sure if this is suitable for my pond.
Then call us before you order: +49 152 27783926, Monday to Friday from 9 am to 3 pm. You’ll speak with someone who keeps koi and builds pond systems themselves. If a product isn’t right for your setup, we’ll tell you.
Can I return it if it doesn't fit after all?
The statutory 14-day right of withdrawal applies to equipment, accessories, and unopened goods. For hygiene reasons, we cannot accept returns of opened food and grooming products.
How do I pay?
PayPal, Klarna, Apple Pay, Shop Pay, credit card and the other payment methods you see at checkout. You can also pay in person when picking up your order.

