Universol Hard Water 11-10-28+2MgO+TE

Product code


Universol Hard Water 225 is developed for application in hard irrigation water. It promotes compact growth in flowering plants and is ideal for hardening off plants. Universol Hard Water 225 acidifies the irrigation water and neutralizes bicarbonate. The N:K ratio of 2:5 means this product can be used in combination with water containing high nitrogen levels and with nitrogen fertilizers (e.g. Nitric acid). 

Pack size: 25 kg Details

Universol Hard Water 11-10-28+2MgO+TE

  • Contains all elements; NPK, magnesium, trace elements and even calcium;
  • Always the same composition thanks to stringent quality control;
  • Quick effect due to strong, fast performance; 
  • Dissolves entirely and quickly because of the special ingredients and the ‘Bright Solution System’;
  • Excellent price / quality ratio;
  • Always a suitable analysis for your crop;
  • Improves the quality of your irrigation water, by taking out bicarbonates;
  • The pH of the soil remains stable as a result of the HCO3- buffering effect.

This product is not recommended in soft water types, like rain water.

Universol Hard Water 225 cannot be mixed in the same tank with other Universol products, other NPK fertilizers or phosphate containing fertilizers (except for phosphoric acid). To ensure that this product dissolves completely, prepare the stock solution 1-2 hours before use and stir well.

Recommended Universol rates for pot and bedding plants


100 % Universol

50 % Universol

50 % Osmocote

Crops with high fertilizer requirements

1-2 g/l

0.5-1 g/l

Crops with normal fertilizer requirements

1-1.5 g/l

0.5-0.75 g/l

Salt sensitive crops

0.5-1 g/l

Depends on situation


Recommended Universol rates for container nursery stock crops

Crops with high fertilizer requirements

20 g/m2/week

10 g/m2/week

Crops with normal fertilizer requirements

15 g/m2/week

7.5 g/m2/week

Salt sensitive crops

10 g/m2/week

5 g/m2/week


Trial first on a small scale before rate, application or other changes in your cultural practices are implemented. As circumstances can differ and as the application of our products is beyond our control, ICL Specialty Fertilizers cannot be made responsible for any negative results. Always ask your ICL Specialty Fertilizers advisor for the best results. Store under dry conditions. Partly used or damaged bags should be closed well.


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