Hydra Rapide (Lake Green Water Treatment)

Hydra Rapide (Lake Green Water Treatment)
Pack Size: 1x20Kg upto 1 acrePack Size: 2x20 kgPack Size: 4x20Kg upto 4 acre
Our Price:  £171.30(Inc. 20% VAT)(£142.75 Exc. VAT)

Brand:  HYDRA

  • Bacteria blend checks green algae and nutrient build up in lake waters
  • Eco friendly biodegradable product for green water treatment in lakes
  • Remains effective and releases oxygen in the water long after treatment
  • Shelf life 3 years, 20 Kg treats up to 1 acre

Orders over 100 Kg will be delivered by pallet. Please be sure you are able to accept a pallet delivery.

Features & Advantages

  • Fully biodegradable, non-organic base granules with unique self-mixing ability.
  • An effective lake algae treatment that maintains clean, clear and healthy water in lakes with fish and other aquatic living beings.
  • Acts as a slow oxygen releasing agent that allows the rapid growth and colonization of aerobic bacteria in the water body.
  • Ion exchange process absorbs phosphates and nitrites as well as various other pollutants to clear lake algae bloom and not letting them to return.
  • Easy application process includes broadcasting over the lake surface.


Hydra Rapide is an effective green water treatment product for large bodies of water.

  • The ion exchange process of the constituents in the product locks up phosphates (important for algal growth) and thwarts green algae in lakes.
  • Hydra Rapide is a blend of powerful bacteria with wide spectrum action that feeds on the extra nutrients present in the water thus outcompeting algae for food on which it thrives.
  • High silt deposits at the bottom of the lakes are responsible for continuous release of nutrients thereby allowing a nutrient build up in the water body. This nutrient build up is a perfect breeding ground for algae. Anaerobic bacteria present in the silt slow down the decomposition process of the organic deposits. Hydra Rapide slowly releases oxygen in the water over a long period of 4-6 months, allowing sufficient time and conditions for aerobic bacteria to colonize.
  • Aerobic bacteria acts much faster and more efficiently on the deposits and accelerates decomposition.
  • Every grain of Hydra Rapide contains multiple nano size holes providing vast surface area for the aerobic bacteria to colonize and hence better product efficiency.


Hydra Rapide effectively treats large water bodies including lakes. The product is completely safe to use and keeps the water clear and healthy without damaging the environment.

How To Use: Hydra Rapide

 Usage Rates

  • 100g Treats 20 m².
  • 1 kg Treats 200 m²
  • 5 kg Treats 1,000 m²
  • 10 kg Treats 2,000 m²  (1/2 acre)
  • 20 kg Treats 4,000 m² (1 acre)

Broadcast evenly over area of lake

DO NOT dilute with water

Use when water temperature is above 12°C (54°F) 

Do not use if the water is clear from algae as Hydra Rapide needs to react with organic matter to use up its oxidising power.                                                                                                                                                    

During treatment ensure minimum of 8-10mg/L DO (dissolved oxygen). Use aeration by water pump or air pump, remember algae is adding oxygen to your water, therefore removing it will lower your oxygen level.

Allow plenty of time to observe fish in case of adverse reaction. Do not use on a windy day. Water might go cloudy at first but will clear after a couple of days

After application, do not allow undiluted granules to remain in area where humans/animals are exposed. Non-target plants will suffer contact burn if undiluted granules are accidentally spilled on them. If they are spilled simply rinse off with water. Do not apply in such a way that the concentrate comes in contact with grass, plants and other foliage.


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