Third party data processing

To improve our offer, we have information about user behavior by third parties processed.
Here we offer you the opportunity to individually agree to each individual data processing by third parties. Privacy

Essential cookies

Cookies, which are necessary for the proper operation of our shop.

Google Analytics

Analyzes website usage to deliver custom content.
Performs analytics to optimize website functionality..

Cookie lifetime: 2 years

Google Analytics eCommerce

Conversion tracking with the Google Analytics eCommerce extension.

Type of storage

May we save your settings permanently in the form of a cookie in your browser?
Otherwise, the settings will be lost when you close the browser window.




High purity sodium bicarbonate

  • high purity salt without organic impurities
  • quick & easy way to adjust the carbonate hardness (Alkalinity)
  • Manufacturer:Nyos
  • Item number:V156181
starting from 12,90 €

including 19% VAT ,

Recommended retail price: 12,90 €

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

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.

100L 19ml 38ml 57ml 76ml
200L 38ml 76ml 113ml 151ml
500L 94ml 189ml 283ml 378ml
25gal 0.6fl oz
1.2fl oz
1.8fl oz
2.4fl oz
(71 ml)
50gal 1.2fl oz
2.4fl oz
3.6fl oz
4.8fl oz
100gal 2.4fl oz
4.8fl oz
7.2fl oz
9.6fl oz
200gal 4.8fl oz
(142 ml)
9.6fl oz
14.5fl oz
19.3fl oz

Applying 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.

Other customers have also bought the following items
starting from 12,90 €
Ocean Nutrition Green Marine AlgaeOcean Nutrition Green Marine Algae
starting from 5,40 €
Ocean Nutrition Formula 2 FlakesOcean Nutrition Formula 2 Flakes
starting from 5,20 €
Ocean Nutrition Prime Reef FlakesOcean Nutrition Prime Reef Flakes
starting from 5,20 €
Ecotech Marine Coral GlueEcotech Marine Coral Glue
starting from 18,90 €
Prodibio BioDigestProdibio BioDigest
starting from 14,90 €
Ocean Nutrition Formula 1 FlakesOcean Nutrition Formula 1 Flakes
starting from 5,20 €