Terminate by AquaMED is a formalin x Malachite solution However, it is not clear what strength it is. That makes you 100% reliant on the manufacturer to give you the correct dose and interval.
The Aqua Meds Terminate formula isn’t a single chemical “formula” like a molecular compound, but rather a medicated treatment mixture used in koi and goldfish ponds to treat external parasites and fungal infections. It’s specifically a combination of two active chemical agents:
🧪 Active Components of Terminate
• Malachite Green (chloride) – a dye-based antiparasitic and antifungal agent that targets external parasites and fungi. The chloride form is used because it’s less toxic than the oxalate salt form typically found in other products.
• Formalin – an aqueous solution of formaldehyde that penetrates parasite membranes and enhances the effectiveness of malachite green, especially against tough, salt-resistant strains.
Together, this Malachite Green (chloride) + Formalin (MG&F) blend is the basis of Terminate’s effectiveness. It’s used following specific dosing instructions in pond water to clear parasites like Costia, Chilodonella, Ich, Trichodina, Oodinium, and to control fungal infections on fish.
If you’re asking for a precise chemical formula, these ingredients are best described individually:
• Malachite Green chloride (a complex organic cation with chloride counterion)
• Formalin (aqueous formaldehyde, approximate formula CH₂O in water)
But as a product, Terminate is a formulated mixture rather than a single chemical substance with one formula.
Unfortunately, the exact percentage strength of formalin in Aqua Meds Terminate(by percent formaldehyde/formalin in the finished product) is not publicly disclosed by Aqua Meds on the product label or official product pages that are available online. The product is described as a blend of malachite green (chloride) and formalin (MG&F) for treating koi pond parasites and fungus, but specific ingredient concentrations (e.g., % formalin) are not listed in the publicly available formulation information from the manufacturer’s site or common seller listings.
Key points from available sources:
• Terminate is formulated with malachite green (chloride) and formalin (aqueous formaldehyde) as its active components.
• The product is marketed as a synergistic “MG&F” (malachite green + formalin) treatment, but no product page or seller specification provides the percent composition of formalin or malachite green in the mixture.
If you need the exact formalin percentage (e.g., 10%, 20%, etc.) for regulatory, safety data sheet (SDS), or dosing calculations, the best sources would be:
• The product’s Safety Data Sheet (SDS), which typically lists concentrations of hazardous components (formalin/formaldehyde) — vendors are required to provide this with purchase or on request.
• Directly contacting Aqua Meds customer support or the retailer to request the detailed formulation or SDS.
I wasn’t able to find an official Aqua Meds Terminate SDS (Safety Data Sheet) published on the manufacturer’s website or a current publicly accessible SDS for the specific Aqua Meds Terminate (MG & Formalin) koi/pond treatment. Aqua Meds’ product pages describe the ingredients generically (malachite green chloride + formalin) but do not list the formalin percentage or provide an SDS PDF online that’s easily accessible via search.
Here’s what we can say based on typical practice and similar products:
🔎 What’s Known About Terminate’s Composition
• The product is formulated with malachite green (chloride) and formalin (aqueous formaldehyde) — a standard “MG & F” pond medication mixture.
• However, Aqua Meds does not publish the exact percentage of formalin in the product on its public product pages.
🧪 Why SDS Info Matters
The SDS (Safety Data Sheet) normally would list:
• The % formalin/formaldehyde (e.g., 10 %, 30 %, etc.)
• Other ingredients
• Hazards and safety precautions
• First-aid measures
But I couldn’t locate an official, up-to-date Terminate SDS on the manufacturer’s site or through standard SDS search results.
📌 What You Can Do to Get the Exact SDS
To obtain the precise & authoritative SDS (including the formalin %):
1. Contact Aqua Meds support directly — SDS sheets are required by regulation and should be provided upon request.
2. Ask the retailer from whom you plan to purchase the product — they must provide the SDS before sale.
3. Check the product packaging — SDS info or ingredient percentages are often referenced on the physical label.
