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Blagdon, Interpet & Clearpond Pond Water Treatment Specifications

Dosage and pack sizes for Blagdon and Interpet pond water treatments

Pond Treatments - Blagdon / Interpet

Blagdon /  Interpet

Bottle or packet size


Treatment Dose Required per 1,000 Litres

Treatments Required

PH range for best results

Ammonia Remover 250 ml 2,273 110 ml Test with a Salicylate test kit. Levels should be below 0.1 mg / litre 7 to 8
500 ml 4,546
1 litre 9,092

Bio Start

Sachet 2,273   Sprinkle over foams, and in pond near pond pump. 7 to 8
Carton (4 sachet) 9,092

Blanket Weed Algaway

 623gm 10,740 58 gm 14 days apart during peak season 7 to 8
2610gm 45,845

Clear Pond

250 ml 5,682 44 ml Can re dose after 5 days if needed 6.5 to 8.5
1 litre 11,364
5 litre 56,820
Liquid Barley Straw 250 4546 Initial dose 27.5 ml. follow up every 14 days of
 8.8 ml
Should re dose every 14 days during the growing season 7 to 8
500 9,092
1 litre 18,184

Feature Algae Control

250 ml 625 400 ml 2 doses 14 days apart.             Then monthly  

Flora Boost

250 ml 2,273 27.5 ml every 28 days during warmer weather 7 to 8
1 litre 9,092

Fresh Start

250 ml 2,273   Use during:- Initial pond fill, pond top ups and water changes 7 to 8
500 ml 5,546
1litre 9,092
5 litre 45,460

Green Away

250 ml 11,365 22 ml Can re dose after 14 days if needed 6.5 to 8.5
500 ml 22,730
1 litre 45,460
5 litre 227,300

Pond Balance

Standard 6,825   3 treatments 10 days apart to start. Then monthly 7 to 8
Value Pack 13,600
Medium 40,900
Large 254,000

Pond Tap Safe (Bioactive)

250 ml 9,000 27.7 ml Repeat when tap water is added to the pond  

pH Down

100 gm   110 gm first treatment then observe what happens for next treatment    
250 gm
500 gm

pH Up

100 gm   Try and observe for the next treatment    
250 gm
500 gm

Sludge Buster

Sachet 2,273   14 days 7 to 8
Carton (4 sachet) 9,092

Sludge Control (Bioactive)

250 ml 9,092 27.5 ml 4 does 5 days apart Then monthly during warmer weather 7 to 8

Clearpond treatments


Bottle or packet size


Treatment Dose Required per 1,000 Litres

Treatments Required

KH range for best results


500ml 2,000 50ml

When setting up a new pond or Bio-Filter.
Cleaning pond or Bio-Filter,
Increasing bioload such as adding new fish.
4 to 6
Pond Clean 500ml 12,500 20ml When problem algae appears. Depending on bioload may only need to be repeated every few months if algae returns. 4 to 6
PondStart 500ml 5,000 100ml Use to neutralize chlorine and condition tap water 4 to 6
Feature Clean 500ml 2,000 200ml Use to keep water clear and free from surface staining and producing green water algae 4 to 6
Crystal Lagoon 500ml 5,000 100ml Use to clear murky water 4 to 6
Pondzyme 500ml 2,000 50ml If sludge becomes a problem 4 to 6
* Pond treatments are ineffective with a low KH.

The Nitrogen Cycle and Importance of Oxygen

Nitrogen is a vital element of protein and is absorbed by green plants in the form of nitrate. Together with ammonia, ammonium and nitrite, it is found naturally in rivers, lakes and streams in very small quantities

In a pond environment, nitrogen compounds (nutrients) can be created quickly by faeces, urine and other excreta, plant remains and decaying food.

When concentrated these nutrients can have a harmful effect on a ponds inhabitants Organic nitrogenous substances decay in stages in the presence of oxygen, a process called ‘oxidative breakdown’. It produces various nitrogen compounds (nutrients) as follows…

Toxic ammonia and non-toxic ammonium are produced in the first stage of the nitrogen cycle.
The pH value determines which of the two will predominate. Ammonia occurs at a pH of 7.0 and over.

The second stage of the nitrogen cycle is nitrite which is the result of the bacterial oxidation,
or combustion, of ammonia/ammonium.

Nitrite is also toxic to aquatic life, but not as toxic as ammonia.

In the third and final stage nitrite is converted to nitrate. Nitrate is harmful only in very high concentrations.

The key element and most important factor to get all of the above to work is the availability of free oxygen.