FOK Bio Factor VL 1.5kg

FOK Bio Factor VL 1.5kg

Biological pond treatment for filter support, sludge reduction and water balance

FOK Bio Factor VL is a Japanese koi pond conditioner used to improve water clarity and support koi condition, colour and appetite while helping reduce blanketweed pressure. The supplier dosage is 50g per 2,200 gallons, mixed in a watering can and added to the pond once per week.

FOK Bio Factor VL is a premium pond water conditioner designed to improve water clarity, biological balance, and overall koi health. It combines beneficial bacteria and minerals to support faster fish growth, stronger bone and scale development, and enhanced colour intensity. It is widely used in koi care systems for maintaining high water quality and a visually clear pond environment.

Biological treatments such as FOK Bio Factor VL 1.5kg work best when the pond gives the bacteria the right conditions to establish. Use in chlorine-free water, maintain good oxygen levels and avoid dosing at the same time as strong chemical treatments unless the manufacturer says it is safe. They are especially useful after filter cleaning, new pond start-ups, medication courses, heavy feeding or seasonal waste build-up, where the biological system needs extra support.

Biological support guidance

Use FOK Bio Factor VL 1.5kg when the pond or filter needs biological support, such as after cleaning, new filter installation, medication, heavy feeding or seasonal waste build-up. Do not expect bacterial treatments to instantly remove years of sludge; they work by supporting natural breakdown over time, especially when oxygen levels and water temperature are suitable.

Key benefits

• Supports clearer water and improved overall water quality
• Provides beneficial water purification bacteria and mineral support
• Used by koi keepers for colour, lustre, appetite and fish condition
• Can help reduce blanketweed pressure as part of regular pond maintenance
• Weekly application is simple to measure at 50g per 2,200 gallons

Technical information

• Brand: FOK
• Treatment type: Beneficial bacteria and sludge control
• Product form: Powder / mineral treatment
• Target issue: ammonia and nitrite support, filter maturity, organic waste, Sludge
• Best use: Spring / Summer / Autumn
• SKU / product code: MD952
• Dosage / capacity guidance: 50g per 2,200 gallons, mixed in pond water and applied weekly; Dosage guidance: 50g per 2200 gallons
• Important note: Use in chlorine-free, well oxygenated water for best biological activity

How to use safely

The product label should always take priority over general guidance. The points below are included to help customers use FOK Bio Factor VL 1.5kg in a more careful and informed way.

• Use only in dechlorinated water; chlorine can reduce bacterial activity.
• Avoid dosing live bacteria at the same time as strong chemical medicines unless the label allows it.
• Maintain strong aeration so bacteria and filter media have enough oxygen.
• Allow time for biological products to work; sludge and waste will not disappear instantly.
• Reapply after medication, deep cleaning or large water changes where the label recommends it.
• Store the product as instructed and do not use if it has been damaged or contaminated.

Helpful related products and advice

Use these links to compare similar products in the same range or choose supporting testing, purifier or maintenance products where relevant.

• Active Mix Bio
• Aqua-5 Dry Organic Waste Digester – Clears Green Water
• AquaForte Biostabil Water Improvement
• BAO BIO KOI
• Biota Bacterial Activator 200,000
• Browse pond treatments
• Evolution Aqua Pure Pond Bomb
• Evolution Aqua Pure Sludge Bomb
• ultimate guide to koi health
• ammonia and nitrite management guide
• best blanketweed treatment guide

Related treatment options

For similar pond treatments, compare Beneficial Bacteria & Filter Boosters, Microbe-Lift Spring-Summer, Mr Koizumi Subarashi Bioclean. These links are included to help you choose the right product for the same type of pond problem, rather than as random add-ons.