Bio-Spezial 250 – a product for combating cyanobacteria
Femanga Bio-Spezial 250 is a mineral-based water treatment for freshwater aquariums with cyanobacteria…
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Femanga Bio-Spezial 250 is a water treatment for aquarium keepers dealing with cyanobacteria (blue-green algae) and algae growth. It is intended for tanks where the water needs conditioning and where the keeper wants to limit nutrients that feed unwanted growth.
Why it matters
- The preparation adds minerals to the aquarium water, which the manufacturer states support fish condition and plant growth.
- Stronger plant growth uses up nutrients that algae would otherwise consume, which is the stated mechanism for displacing algae and halting its further spread.
- The label prescribes a fixed weekly dose of 10 ml per 100 litres, so the amount per tank is easy to calculate.
- The recommended course is 6–8 weeks, with a water change of one third during treatment.
Specifications
- Brand: Femanga
- Product symbol: FEMANGA BIO-SPEZIAL 250
- EAN: 4260280830124
- Volume: 10 ml
- Weight: 0.25 kg
- Dosing: 10 ml per 100 litres of water, once a week
- Course length: 6–8 weeks
What it works with
The product is designed for freshwater aquariums treated for cyanobacteria and algae, dosed according to tank volume. The manufacturer advises darkening the tank for the first 5 days. Because dying cyanobacteria can release toxins harmful to shrimp, a water change of up to 50% is recommended, so keep shrimp in mind when planning treatment.
Technical specification
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Frequently asked questions
The product is intended to push out algae and cyanobacteria already present in the aquarium, not only to prevent them. It works by supporting plant growth, which deprives algae of nutrients so their growth stops.
The starting dose is 10 ml per 100 litres of aquarium water, added once a week until the algae and cyanobacteria are gone. After that, a maintenance dose of 5 ml is used once a week to keep the tank in good condition.
The manufacturer recommends darkening the aquarium for the first 5 days of treatment. Plan the lighting schedule accordingly before you start the first dose.
The recommended course is 6 to 8 weeks. Weekly dosing continues during this period until the problem is gone.
As cyanobacteria break down, toxins can build up in the tank and harm shrimp, so the manufacturer recommends a water change of up to 50%. During treatment, a routine change of 1/3 of the water is also advised.
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