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Green Algae +Pond Algae +Green Water Treatment HYDRA CRYSTAL 5Kg Treats up to 50,000L

Green Algae +Pond Algae +Green Water Treatment HYDRA CRYSTAL 5Kg Treats up to 50,000L
Green Algae +Pond Algae +Green Water Treatment HYDRA CRYSTAL 5Kg Treats up to 50,000L Green Algae +Pond Algae +Green Water Treatment HYDRA CRYSTAL 5Kg Treats up to 50,000L Green Algae +Pond Algae +Green Water Treatment HYDRA CRYSTAL 5Kg Treats up to 50,000L
Brand: Hydra International Ltd.
Product Code: HYD70270
Availability: In Stock
Price: £54.25

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Hydra Crystal green pond treatment can be used in ponds with good filtration system to Control and prevent green pond water for extended periods and give you crystal clear water

How to Use

As with all pond treatment products pick coolest time of day to apply. DO NOT USE on very hot days. Ensure your pond has adequate dissolved oxygen (8-10 mg/l dissolved oxygen). Remove any dead algae that floats to the top as it occurs. Hydra Crystal requires an external filter to remove the treated algae. Do not use if your water does not have a green tinge as Hydra Crystal needs single cell algae to react with

Clean mechanical filters before starting treatment and keep these filters clean during treatment. Use when water temperature is above 12°C (54°F), i.e. not in winter months. Dilute with tap water (not pond water) and add as a slurry, add to pond near pump outlet so the product is totally mixed into the water, circulate water for even mixing and distribution. Leave UV and pump switched on.

During treatment ensure optimum dissolved oxygen in pond. Use aeration by water pump or air pump, remember algae is adding oxygen to your water, therefore removing it will lower water oxygen level. When treating allow plenty of time to observe fish in case of adverse reaction (increase oxygen levels in water if required).

DO NOT MIX with any other product. Do not use when temperature is below 12°C (54°F). Second Application (if necessary after 48 hours). Do a 10-20% water change before re-applying at same rate.

Usage Rate:

Hydra Crystal- 1Kg treats up to 10,000L

Hydra Crystal- 2x1Kg treats up to 20,000L

Hydra Crystal- 3x1Kg treats up to 30,000L

Hydra Crystal- 5Kg treats up to 50,000L

Hydra Crystal- 20Kg treats up to 200,000L


  • Very Rapidly Removes the Pond Green Water to give you Crystal Clear Water
  • 100% Biodegradable, Maintains Clear, Healthy & Clean Water in your Pond
  • Controls and Prevents Green Water for Extended Periods
  • Not Harmful for Fish, Biological Filters or Pumps Installed in the Pond
  • Shelf life 3 years, 5 Kg Treats up to 50,000 litres

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