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F2P – Nutrients for Diatoms

F2P – Nutrients for Diatoms

Marine microalgae – Diatoms – Guillard F/2

Cell-Hi F2P is a saltwater specific 100% soluble powder used extensively in marine aquaculture.

It is the only fully soluble all-in-one product based on Guillard F/2 available on the market, with identical N, P, trace element and vitamin content.

It contains all the essential macronutrients, micronutrients and vitamins for the optimal growth of coastal marine algae, especially diatoms.

In house test, results show exceptional growth and fast uptake of both nitrate and phosphate.


Cell-Hi All-in-One 100% soluble


kg or liters
1 - 910 - 4950 - 99100 +

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Additional information

Weight1 kg
Dimensions30 × 15 × 1 cm


Macronutrients (elements)
Total available nitrogen (N)14.40 %
Phosphorous (P)1.10 %
Potassium (K)2.95 %
NPK Ratio14 : 1 : 3


Micronutrients (elements)
Iron (Fe)0.8000 %
Zinc (Zn)0.0065 %
Copper (Cu)0.0470 %
Cobalt (Co)0.0051 %
Manganese (Mn)0.0600 %
Molybdenium (Mo)0.0028 %
Boron (B)0.0000 %
Calcium (Ca)0.0000 %
Magnesium (Mg)0.0000 %
Sodium (Na)23.6900 %
Sulphur (S)0.0150 %


Vitamins (elements)
Vitamin B1 (thiamine)1.01 g/kg
Vitamin B12 (cobalamin)0.49 g/kg
Vitamin B7 (biotin)0.24 g/kg

Cell-Hi F2P is a highly concentrated nutrient premix where 1 kg makes 10,000 L culture medium at F/2 strength.



Batch cultivation : recommended for use at concentrations between 0.1-1 g/L. The ideal nutrient concentration will depend on the expected / observed final yields.
Continuous cultivation : typically included at a rate of 0.1 g/L for continuous production (this concentration gives a 1x Guillard F/2).



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 F2P, this stock should be formulated at 1 kg/10 L and used at 1 mL/L for continuous production.



Diatoms : For increased productivity during diatom production, 30 mg/L of metasilicate should be added to the growth media.

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