WaterBlocs MINI-BLOCS are a natural biological treatment for ponds, aquariums, lakes, dams, and fountains. Each pack contains 5 x 20g blocs formulated to clear cloudy water and restore balance to fresh and saltwater aquatic environments — without harsh chemicals.
What Are WaterBlocs MINI-BLOCS?
WaterBlocs are a specially formulated porous mineral substrate containing multiple nutrients that promote the rapid growth of beneficial bacteria when immersed in aquatic water systems.
Once submerged, colonies of naturally occurring beneficial bacteria develop within the porous mineral substrate and around the zeolite particles. These bacterial colonies produce enzymes that consume organic waste, ammonia, and unwanted nutrients — the primary causes of cloudy water and depleted oxygen levels that threaten aquatic life.
WaterBlocs MINI-BLOCS are suitable for both fresh and saltwater systems where fish, turtles, plants, pets, and other aquatic organisms live.
Key Benefits
Clears cloudy water naturally using beneficial bacteria — no harsh chemicals required
Reduces organic waste and ammonia that compromise water quality and oxygen levels
Suitable for fresh and saltwater systems, including aquariums, ponds, dams, and fountains
Reduces the frequency of water changes in fish tanks, aquariums, and fish farms
Safe for fish, turtles, plants, and other aquatic life
Slowly biodegrades, leaving only a natural zeolite residue that is beneficial to soils and harmless to the marine environment
Ponds and lakes: dose at the start of each season for ongoing water clarity
How It Works
WaterBlocs contain a porous mineral substrate blended with nutrients that accelerate the colonisation of beneficial bacteria.
When placed underwater, these bacteria establish themselves within the bloc and begin producing enzymes that break down the organic waste, excess ammonia, and nutrients responsible for murky, oxygen-depleted water.
The result is a healthier, more balanced aquatic ecosystem — naturally.
Best results are achieved when water temperature is 15°C or above, pH is approximately 7.0, and dissolved oxygen levels are maintained at 3ppm or higher with adequate aeration.
Directions for Use
Place the recommended dose of WaterBlocs underwater in an area with gentle or no water flow, every three (3) months. Allow several weeks for large populations of beneficial bacteria to develop fully within the porous mineral substrate.
Placement by application type:
Aquariums — Totally or partially bury WaterBlocs in aquarium gravel
Ponds & Lakes — Apply WaterBlocs to the bottom of the pond or float near the surface
Fountains — Place in the water reservoir or in an area of low water turbulence
To treat sludge — Place WaterBlocs directly in the sludge layer to stimulate the growth of anaerobic bacteria that devour organic waste
Recommended Dosage
Increase dosages for stagnant water, aquatic systems with large amounts of organic waste, or problem areas.
10g Aquarium-Bloc — use one bloc per 25L of water, or per 0.2m² of water surface area
20g Mini-Bloc — use one bloc per 50L–100L of water, or per 0.4m² of water surface area
100g Pond-Bloc — use one bloc per 500L of water, or per 2m² of water surface area
200g Multi-Bloc — use one bloc per 1,000L of water, or per 4m² of water surface area
1.2kg Maxi-Bloc — use one bloc per 5,000L of water, or per 20m² of water surface area
6kg Mega-Bloc — use one bloc per 200,000L of water
For larger water volumes, refer to the Lakes & Dams dosage guidance.
Safety & Precautions
After immersion, once bacterial colonies have developed, handle with rubber gloves and wear a protective mask
Do not consume
Keep out of reach of children
Wash hands thoroughly after use
WaterBlocs have not been certified for water intended for human consumption
Product Details
Pack contents: 5 x 20g blocs
Application: Ponds, lakes, dams, aquariums, and small water features
Water type: Fresh and saltwater compatible
Treatment interval: Every 3 months
Delivery: Included via General Post — Australia Wide
