Kordon’s Rid·Ich Plus
Kordon’s Rid·Ich Plus® (formerly known as Rid-Ich +) is a combination of two powerful medications which have proven effective in the control of many diseases of freshwater fishes caused by external protozoan (single cell) parasites such as white spot disease, Ichthyophthiriasis, Costia, Trichodina, Chilodonella and saltwater external parasites such as Cryptocaryon and Amyloodinium. The medication can also treat fungal infections in fishes.
Key Uses
- Effective against white spot disease (Ichthyophthiriasis)
- Treatment for Costia, Trichodina, Chilodonella
- Control of saltwater parasites including Cryptocaryon and Amyloodinium
- Management of fungal infections in fish
| Active Ingredients | Form | Application |
|---|---|---|
| Malachite green and formalin | Water-soluble liquid | Administered directly into aquarium water |
FAQ
Can Rid·Ich Plus be used in both freshwater and saltwater aquariums?
Yes, Kordon’s Rid·Ich Plus is effective against external parasites in both freshwater and saltwater fish, including species affected by Cryptocaryon and Amyloodinium.
How long does it take to see results after treatment?
Results may vary depending on the severity of the infection, but improvement is typically observed within 3 to 7 days of treatment.
Is this product safe for use with other medications?
Please contact customer service for compatibility information with other treatments.

Jacob Abraham –
Used Rid·Ich Plus on my community tank after a sudden outbreak of white spots. The fish showed improvement within 5 days. The treatment was easy to apply and worked well without harming the beneficial bacteria in the tank.
Alexandra Clark –
Felt confident using this product after reading the detailed instructions. It helped eliminate the Ich outbreak in my freshwater fish. A reliable option for both beginners and experienced aquarists.
Faith Langdon –
My saltwater fish had signs of Amyloodinium, and after using Rid·Ich Plus as directed, the symptoms cleared up completely. No side effects on the coral or invertebrates.