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Analysis
Analysis / Tests
Basin Analysis
5€ discount for your first order with the code: BIENVENUE05 (from 100€ purchase, offers cannot be combined)
Balling Products
Seawater supplements
Basic elements
Fresh Water Supplements
CO2 system
Basin Supplements
Basic elements
5€ discount for your first order with the code: BIENVENUE05 (from 100€ purchase, offers cannot be combined)
Water treatment
Bacterial Treatments
Adverse Treatments
Fish Care
Water treatment
Bacterial Treatments
Adverse Treatments
Fish Care
Water treatment
Bacterial Treatments
Fish Care
5€ discount for your first order with the code: BIENVENUE05 (from 100€ purchase, offers cannot be combined)
Seawater Food
Fresh Water Food
Food Basin
5€ discount for your first order with the code: BIENVENUE05 (from 100€ purchase, offers cannot be combined)
Sand
Substrate for reactor
Sea Salts
Sands / Quartz / Substrates
Remineralizing
Pond Substrate
5€ discount for your first order with the code: BIENVENUE05 (from 100€ purchase, offers cannot be combined)
Seawater Equipment
Freshwater Equipment
Basin Equipment
5€ discount for your first order with the code: BIENVENUE05 (from 100€ purchase, offers cannot be combined)
COLOMBO Lernex PRO 1000 ml is a premium liquid treatment designed to help ornamental fish combat skin worms, gill worms, and resistant parasites . Its professional formula targets tough infestations while remaining suitable for the overall balance of the pond when used correctly. This generous size treats up to 20,000 liters of water , making it a very practical solution for large ponds and heavily stocked systems. Easy to dose, simple to distribute in the water, and known for its comprehensive action, Lernex PRO helps maintain calmer, more active fish and a healthier aquatic environment every day.
Lernex PRO has been formulated to address parasitic infestations that quickly make life difficult for ornamental fish. It specifically targets skinworms , gill flukes , and intestinal worms , but its effectiveness extends beyond that, as it is also known to be effective against leeches , sea lice , and anchor worms . This is a significant advantage for a pond, as these parasites weaken fish, impair their well-being, and can permanently disrupt their health. With this PRO version, Colombo offers a reliable solution for situations where conventional treatments are no longer sufficient or when an infestation requires a more intensive approach.
This treatment relies on a combination of high-quality active ingredients selected for their effectiveness against resistant parasites. Its composition is based on recognized anthelmintic substances, used in a complementary manner to enhance the treatment's efficacy. This approach allows Lernex PRO to provide robust action in areas where certain infestations become more difficult to control. For pond enthusiasts who want precise control, this is a particularly attractive product, as it doesn't just target the most common parasites: it has also been formulated for more resistant strains, notably the skin worm Gyrodactylus and the gill worm Dactylogyrus .
When parasites take hold, fish often show quite telling signs. Unusual lethargy , rubbing against the tank walls or decorations , a decreased appetite , or less natural behavior should raise concern. In some cases, the presence of parasites can even be visible to the naked eye, allowing for faster intervention. This type of product is particularly useful in these situations, as it helps intervene without delay, before stress and weakness become a long-term problem in the tank. For both the fish and their environment, prompt action is often the best course of action.
With its 1000 ml capacity, Lernex PRO can treat up to 20,000 liters of water . This large format is particularly practical for garden ponds, koi ponds, or installations requiring a significant treatment volume. The recommended dosage is 1 ml per 20 liters of water , making calculation quick and easy at the time of application. A measuring scoop is included, further simplifying the process. This packaging is ideal for aquarists and pond enthusiasts who want a reliable, long-lasting treatment suitable for large volumes without needing multiple bottles.
Lernex PRO was designed for ease of use. The product is first mixed with water in a bucket or watering can, then slowly spread over the surface of the pond. This method ensures even distribution and more consistent application. If necessary, the treatment can be repeated after 14 days . For optimal results, it is recommended to turn off the UV sterilizer for the duration of the treatment, to ensure good pond aeration , and not to use activated carbon or zeolite filters. These simple precautions allow the product to maintain its full effectiveness.
After adding the product, parasite activity may initially increase, potentially causing a more pronounced reaction in fish. They may become agitated, swim more nervously, and sometimes even jump out of the pond. Therefore , close monitoring during and after treatment is important. It's also worth noting that below 10°C , the product is not sufficiently absorbed by parasites, reducing its effectiveness in very cold water. When used at the right time and under the right conditions, Lernex PRO is an ideal addition to a comprehensive pond care routine.
Lernex PRO is recognized as harmless to several aquatic animals found in the pond environment, including frogs , salamanders , freshwater crayfish , and snails . This is an important detail for anyone maintaining a vibrant, balanced, and biodiverse pond. This approach allows for the treatment of fish while preserving good ecological balance within the system. However, the product must still be handled with care: it must be kept out of reach of children and pets, avoiding any contact with skin, eyes, or accidental ingestion.
For ponds struggling with stubborn parasites, Colombo Lernex PRO 1000 ml is a solid, practical, and reassuring choice. Its broad spectrum of action , professional liquid formula , ease of dosage , and ability to treat very large volumes make it a top ally for ornamental fish. It naturally finds its place in the equipment of enthusiasts who want to act quickly with a reliable product suited to demanding situations. At Zoanthus, it's for anyone looking for an effective solution to preserve the well-being of their fish and maintain a clean, stable, and aesthetically pleasing pond, day after day.
Preis Coly effectively protects freshwater and saltwater fish against gill and intestinal parasites.
Placollect from JBl is a complete planarian trap with a length of 13 cm. It captures flat greens (planarians) without chemicals and efficiently.
Coly 1 liter of Preis, is a treatment against parasites, it Effectively protects both freshwater and saltwater fish against gill and intestinal parasites.
Colombo Lernex 200g is a treatment designed to effectively combat parasites such as skin worms, gill worms, leeches, and sea lice , it also acts against internal parasites. This powerful formula specifically targets parasites, preserving the beneficial flora and fauna of your pond . Easy to use, Lernex can treat up to 5,000 liters of water , ideal for garden ponds, whether large or small. This quality treatment is a valuable ally for Koi and other ornamental fish enthusiasts, offering optimal care with ease.
Colombo Lernex 400g is a treatment designed to effectively combat parasites such as skin worms, gill worms, leeches, and sea lice , it also acts against internal parasites. This powerful formula specifically targets parasites, preserving the beneficial flora and fauna of your pond . Easy to use, Lernex 400g can treat up to 10,000 liters of water , ideal for garden ponds, whether large or small. This quality treatment is a valuable ally for Koi and other ornamental fish enthusiasts, offering optimal care with ease.
COLOMBO Lernex PRO 2500 ml is a professional liquid treatment designed to eliminate skin worms, gill worms, and other resistant parasites that weaken ornamental fish. Thanks to its comprehensive formula, it acts in a targeted way on difficult infestations while remaining suitable for maintaining the balance of the pond when used correctly. Its extra-large size allows it to treat up to 50,000 liters of water , making it a particularly attractive choice for large ponds, decorative ponds, or setups housing many fish. Easy to dose and simple to distribute in the water, Lernex PRO 2500 ml helps maintain more active fish, a healthier environment, and more confident aquatic health management.