Medications
LGND Medi Bind™
Single Dose Treatment
Harmless to Plants & Filter Bacteria
All Fish Safe
Suitable for all tropical and coldwater aquariums
Treats 500 Litres
£ 8.90 (incl. VAT)
- EUR: 10.35€
Overview
MediCopper Complete™ is a professional copper-based treatment formulated to control a wide range of external protozoan parasites commonly encountered in freshwater and marine quarantine systems. The carefully stabilized copper formulation provides consistent therapeutic activity while helping maintain copper availability throughout the treatment period.
External parasites such as Cryptocaryon irritans (Marine Ich), Amyloodinium ocellatum (Marine Velvet), Costia, Trichodina, and other sensitive protozoans can rapidly weaken fish by damaging gill tissue and disrupting normal respiration. Left untreated, these infestations may lead to severe stress, secondary infections, and significant losses.
Legend MediCopper Complete™ is designed to deliver controlled copper treatment with predictable dosing and excellent stability. The formulation is suitable for use in quarantine and hospital aquariums where accurate parasite management is required. When used as directed and monitored with an appropriate copper test kit, it provides an effective treatment option for many of the most persistent external parasitic infections affecting ornamental fish.
Indications
MediCopper Complete™ is appropriate for treating a variety of ectoparasites of both freshwater and marine fish. Below are some of the more common infections treatable with MediCopper Complete™. Be aware that many diseases and infections share similar physical and behavioral symptoms, e.g. clamped fins, lesions, loss of appetite.

Velvet
Piscinoodinium (freshwater) / Amyloodinium (saltwater)
Similar to Ich, but smaller and grey-gold. Most often seen in saltwater, but can occur in freshwater as well. Velvet is less common than Ich, but the treatment is almost identical. We see it more often in saltwater than freshwater.
Suggested Treatment Period:
14 days at full concentration (0.25 mg/L for freshwater, 0.5 mg/L for saltwater).
Special Considerations
Keep in mind that many parasites and diseases will mimic the symptoms of Ich or Velvet, and not all of these are best treated with MediCopper Complete™. Often, Flukes or Lymphocystis are mistaken for Ich, and these are better treated with MediGuard™. Research possible fish diseases and, if in doubt, consult an exotic animal vet.

Ich (White Spot)
Ichthyophthirius (freshwater) / Cryptocaryon (saltwater)
Looks like salt sprinkled on the fish's body and fins. Usually accompanied by twitching, flashing, and other signs of stress and irritation. Several parasites are grouped under this name, but the symptoms are almost identical. Ich is among the most common infections of fish, and is entirely treatable with diligence and attention to water quality.
Suggested Treatment Period:
14 days at full concentration (0.25 mg/L for freshwater, 0.5 mg/L for saltwater).
Special Considerations
It is very important with this parasite to maintain the copper concentration for the full treatment period. A drop in the copper concentration will allow the parasite to multiply and reinfect the fish. Due to the nature of this parasite, it is normal for the visible signs of infection to get worse before they get better. The medication is still working, but it takes some time for the salt-like cysts on the fish to clear out. Keep up the treatment and the visible spots should clear soon!
Directions
Before Treating
Remove all invertebrates — these are extremely sensitive to copper and will not tolerate treatment with a copper-based medication. Turn off UV filters, ozone filters, and remove chemical filtration like carbon and Purge XPro®. Do not use in conjunction with any other medication. Do not use any products which contain reducing agents (conditioners, ammonia binders, etc.) while using MediCopper Complete™.
Treatment
If the bottle has a dropper cap, use 20 drops (1 mL) per 40 L (10.5 US gallons) the first day, wait 48 hours, then repeat. On non-dropper caps, each inner ring is 1 mL. In freshwater use half dose. Final copper concentration is 0.5 mg/L (0.25 mg/L in freshwater). Leave at this concentration for 14 days. Do not redose without testing the water with copper test. If tank has ever been treated with an ionic copper (e.g. copper chloride, sulfate or citrate), test copper level after initial dosing. Although most fish tolerate MediCopper Complete™ to 0.8 mg/L, it is not advisable to exceed 0.6 mg/L copper.
Finish the Full Treatment
Ich, velvet, and many other parasites spend a large portion of their life cycle as a cyst that is immune to medication and hiding in the substrate of your tank. Remember that you need to finish the full treatment even if you can't see parasites on the fish!
After Treating
MediCopper Complete™ can be removed using carbon. Leave the copper-absorbing media in your tank for at least a week after the copper concentration has reached 0 to ensure all traces of the medication have been completely removed.
FAQ
Why should I use a copper test kit during treatment?
Copper concentration must remain within a specific therapeutic range to be effective against parasites while remaining safe for fish. Regular testing helps ensure treatment remains both effective and controlled.
Can I use MediCopper Complete™ in a reef aquarium?
No. Copper is highly toxic to corals, shrimp, crabs, snails, and many other marine invertebrates. Treatment should only be performed in a dedicated quarantine or hospital aquarium.
Will copper harm biological filtration?
Copper generally has less impact on nitrifying bacteria than many medications, but aquarium conditions should still be monitored closely throughout treatment to ensure water quality remains stable.
Can I use this product with other medications?
Combining medications should only be done with caution. Some medications may interact with copper or increase stress on fish. If combination therapy is being considered, compatibility should be confirmed before use.
How long should fish remain under copper treatment?
Treatment duration depends on the parasite being targeted. Marine Ich and Marine Velvet generally require continuous therapeutic copper levels for several weeks to ensure complete eradication.
Can copper be used on all fish species?
Most commonly kept marine fish tolerate properly managed copper treatment well. However, certain species, including some sharks, rays, mandarins, and other sensitive fish, may exhibit reduced tolerance and require special consideration.
Can I treat freshwater fish with copper?
Copper may be used against certain freshwater protozoan parasites, but sensitivity varies between species. Always monitor fish carefully and avoid overdosing.
What happens if I stop treatment too early?
Prematurely ending treatment may allow surviving parasites to complete their life cycle and reinfect the fish, resulting in a recurrence of symptoms.
Safety
Keep out of reach of children and pets. For aquarium use only. Do not use in aquariums containing corals, shrimp, crabs, snails, or other invertebrates.
Avoid overdosing and always verify copper concentration with an appropriate copper test kit. Wash hands after handling. Avoid contact with eyes and skin. In case of accidental contact, rinse thoroughly with clean water.
Store tightly closed in a cool, dry location away from direct sunlight. Do not use for human consumption, veterinary food production, or animals intended for human consumption.
Copper residues may remain in treated aquariums and equipment; exercise caution if equipment will later be used in systems containing invertebrates.
