Is Haifa MKP the same as monopotassium phosphate?

Yes. MKP stands for monopotassium phosphate, and Haifa's version is 0-52-34, meaning 52% P2O5 and 34% K2O with no nitrogen.

Can I use it in hydroponics?

Yes. It is highly water-soluble and chloride-free, which makes it a common phosphorus and potassium source in hydroponic nutrient mixes. Add it to your reservoir and check pH afterward.

Does it contain nitrogen?

No. The ratio is 0-52-34, so it supplies only phosphorus and potassium. Crops still need nitrogen from another source.

Rates depend on your crop and system, so follow the label or your nutrient program. It is typically dosed in grams per gallon for fertigation or foliar sprays.

How should I store it?

Keep it dry and sealed. The stated shelf life is 3 years from the manufacturing date, and the crystals absorb moisture if left open.

When is the price lowest?

Prices vary by store and season. Two stores list it new, and the best price seen is $85.98 at RASA Garden Supply Company as of November 6, 2026.

Where is the Haifa MKP monopotassium phosphate cheapest?

At RASA Garden Supply Company, for $85.98, as of our latest check.

Where can I buy the Haifa MKP monopotassium phosphate?

4 stores we checked sell it, including RASA Garden Supply Company, SERES, Amazon, Custom Hydro.

Haifa MKP monopotassium phosphate

Best price now

$85.98at RASA Garden Supply CompanyObserved at 9:54 PM

Compared across 2 stores. Prices are checked against each store and labelled with when.

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Our take on the Haifa MKP monopotassium phosphate

Haifa MKP is a water-soluble monopotassium phosphate fertilizer with a 0-52-34 nutrient ratio: 52% phosphate and 34% potash, with no nitrogen. It dissolves cleanly for fertigation or foliar sprays and is chloride-free, so it suits salt-sensitive crops and hydroponic systems. The 50 lb (22.7 kg) bag is the common size for small growers and serious home gardeners. The best new price is $85.98 at RASA Garden Supply Company as of November 6, 2026, with two stores listing it new.