Aquaforest AF K Boost 250ml – Potassium Supplement for Planted Aquariums
Aquaforest AF K Boost 250ml is a professional freshwater planted aquarium potassium supplement designed to raise potassium levels and provide aquatic plants with an easily absorbable source of this essential macro nutrient. Ideal for planted aquariums, aquascapes, high-light systems and CO2-fertilised tanks, this concentrated liquid fertiliser helps prevent potassium deficiency and supports strong, healthy plant growth.
Potassium plays an important role in aquatic plant health, supporting enzyme activity, osmotic regulation and the transport of nutrients within the plant. In fast-growing planted aquariums, especially those with strong lighting, CO2 injection and regular fertilisation, potassium can become depleted quickly. Aquaforest AF K Boost allows aquarists to maintain balanced nutrient levels and promote robust plant development.
| Product Specification |
|---|
| Product Name: Aquaforest AF K Boost |
| Volume: 250ml |
| Form: Liquid |
| Target Use: Freshwater planted aquariums, high-light systems, CO2-fertilised tanks |
| Key Nutrient: Potassium (K) |
FAQ
How often should I add Aquaforest AF K Boost to my aquarium?
Add once every 2 to 4 weeks depending on lighting intensity and plant growth rate. For high-light or CO2-fertilised tanks, use every 2 weeks. Always follow the recommended dosage on the label.
Can Aquaforest AF K Boost be used in a tank with no CO2 system?
Yes, it is suitable for tanks without CO2 systems, especially in high-light environments where potassium demand is higher. However, plant growth may be slower without CO2 support.
Is Aquaforest AF K Boost safe for fish and invertebrates?
Yes, Aquaforest AF K Boost is formulated specifically for freshwater planted aquariums and is safe for fish and invertebrates when used as directed.

Harry Mackenzie –
I’ve used this supplement in my high-light planted tank for three months now. My plants are growing vigorously, especially the stem plants and floating species. The color and density have improved noticeably. Easy to mix and no fish issues reported.
Anthony Manning –
Good potassium boost for my CO2 tank. Plants have developed stronger stems and better leaf structure. I mix it once every two weeks and it works well with my existing fertiliser routine.
Chloe Peters –
After switching from a basic liquid fertilizer, I noticed a significant improvement in plant health. The leaves are greener and more robust. I appreciate the clear instructions and consistent performance.