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WP – Nutrients for marine flagellates

WP – Nutrients for marine flagellates

Marine microalgae – Isochrysis – Tetraselmis – Walnes

Cell-Hi WP is a saltwater specific 100% soluble powder used extensively in marine aquaculture.

It is the only fully soluble all-in-one product based on Walnes’ available on the market.

It contains all the essential macronutrients, micronutrients and vitamins for microalgal growth. It is recommended by the UK Culture Collection for both algae and protozoa as is particularly suitable for flagellate algae such as Isochrysis and Tetraselmis.


Cell-Hi All-in-One 100% soluble


kg or liters
1 - 910 - 4950 - 99100 +

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Additional information

Weight500 kg
Dimensions15 × 15 × 20 cm


Macronutrients (elements)
Total available nitrogen (N)10.82 %
Phosphorous (P)1.17 %
Potassium (K)0.00 %
NPK Ratio11 : 1 : 0
Micronutrients (elements)
Iron (Fe)0.2200 %
Zinc (Zn)0.0088 %
Copper (Cu)0.0044 %
Cobalt (Co)0.2900 %
Manganese (Mn)0.0820 %
Molybdenium (Mo)0.0032 %
Boron (B)3.1000 %
Calcium (Ca)1.4800 %
Magnesium (Mg)0.0000 %
Sodium (Na)18.6500 %
Sulphur (S)0.0140 %
Vitamins (elements)
Vitamin B1 (Thiamine)0.07 g/kg
Vitamin B12 (Cobalamin)6.67 g/kg
Vitamin B7 (Biotin)0.07 g/kg

Cell-Hi WP is a highly concentrated nutrient premix where 1.5 kg makes 10,000 L culture medium at Walnes strength.


Batch cultivation : recommended for use at concentrations between 0.15 g/L. The ideal nutrient concentration will depend on the expected / observed final yields.
Continuous cultivation : typically included at a rate of 0.15 g/L for continuous production (this concentration gives a 1x Walnes).


To ensure sterilisation diluted media can be passed through a 0.2 micron syringe.
Autoclaving of diluted media is also possible however, this may result in some minor changes to chemical composition.


In order to ensure good mixing of micronutrients when using at small scale and for ease of use a large scale, it is recommended that a high concentrate stock is produced.
For Cell-Hi WP, this stock should be formulated at 1.5 kg/10 L and used at 1 mL/L for continuous production.


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