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NYOS alkalinity KH powder

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NYOS alkalinity KH powder

(1 customer review)


Earn 77 - 238 points upon purchasing this product.

  • High purity salt with no organic impurities
  • Quick and easy way to adjust the carbonate hardness (alkalinity)
  • Ideal for any 2 part dosing system
Use up to 7700 - 23800 points to purchase this product!


Nyos® ALKALINITY+ is a high purity sodium bicarbonate. With ALKALINITY+ you can increase the carbonate hardness in your saltwater aquarium quickly and simply.

How to Dose:

Pre-mixed solution (recommend): Mix 160g (5.64oz) of ALKALINITY+ to 2000ml (0.53gal) of RODI water. 38ml (4.8fl oz) of this solution will increase the KH in a 100L (100gal) aquarium by approximately 1°dKH (1°dKH).

This is a reference value; the actual dosage amount may vary.

Dosage of the pre-mixed solution:

AlkalinityTank +0,5°dKH(°dKH) +1°dKH(°dKH) +1,5°dKH(°dKH) +2°dKH(°dKH)
100L 19ml 38ml 57ml 76ml
200L 38ml 76ml 113ml 151ml
500L 94ml 189ml 283ml 378ml
25 gal 0.6fl oz(18ml) 1.2fl oz(36ml) 1.8fl oz(54ml) 2.4fl oz(71ml)
50 gal 1.2fl oz(36ml) 2.4fl oz(71ml) 3.6fl oz(106ml) 4.8fl oz(142ml)
100 gal 2.4fl oz(71ml) 4.8fl oz(142ml) 7.2fl oz(214ml) 9.6fl oz(285ml)
200 gal 4.8fl oz(142ml) 9.6fl oz(285ml) 14.5fl oz(428ml) 19.3fl oz(570ml)


Dosing ALKALINITY+ powder directly: Dose in the sump or pre-mix with aquarium water.

30g (0.4oz) of ALKALINITY+ will increase the KH of a 1000L (100gal) aquarium by approximately 1°dKH (1°dKH).


We recommend measuring your alkalinity at least 2 times per week.

Weight N/A
Dimensions N/A

1 KG, 4kg



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1 review for NYOS alkalinity KH powder

  1. Abdul Razak H. (verified owner)

    High purity. It dissolves completely, no residue.

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