Sodium Bicarbonate


Use: 4 gr. (1 teaspoon) will increase the alkalinity levels by about 1DKH in 100 liters of water. The required level of alkalinity is around 7-9 DKH.

You just need to dissolve the required quantity in 1-3 liters of reverse osmosis water with good agitation. Slowly add this solution to your decantation.

It is not recommended to get alkalinity levels over 1DKH per day. overdose can damage corals.

SKU: RN-2022 Categories: , , ,

Sodium bicarbonate for reef tanks

One of the biggest challenges in the modern reef tank is to keep a balanced ratio between calcium and alkalinity.

When we dose buffer (sodium bicarbonate) it affects our calcium level which is decreasing slightly and when the alkalinity is decreasing then the calcium will raise slightly.

Monitoring the alkalinity levels 2-3 times a week is very important since Alkalinity will be the most challenging to keep consistent.

Alkalinity is salt water’s ability to buffer the pH against acids which try to lower the pH. Generally, natural seawater contains an alkalinity level of 7 dKH. And in our tank, we’d like to have a constant level of between 9-11. This value much depends on our salt.

Our Royal nature advanced pro formula salt will help you to keep your alkalinity in these levels.

However – the relationship between calcium and alkalinity is an important one, and the numbers need to be balanced for optimal absorption by the corals and other life, or we may experiment with elevating the alkalinity level beyond the balanced ratio trying to increase coral growth. An alkalinity level of up to 12-14 dKH is considered safe, and possibly beneficial for the corals. If we do need to increase our alkalinity levels – then it’s highly recommended to use our Royal Sodium bicarbonate. Since Royal Nature uses only High-purity chemicals we can provide a complete product line for the best and easy supplementation of calcium, magnesium, and carbonates.

Adding calcium and alkalinity is important but lower or higher levels of carbonates will force us to keep an eye on the precipitation as this becomes a waste of our calcium and alkalinity dosing efforts.
Low alkalinity can also be one of the factors of nuisance algae growth. Both low and high alkalinity levels can cause precipitation of calcium. Low alkalinity causes precipitation in the water, while high alkalinity causes precipitation on heat sources like heaters and powerhead impellers.

Suggested Balanced Calcium and Alkalinity

  • 350 ppm to 1.5 dKH
  • 375 ppm to 2.0 dKH
  • 400 ppm to 5.5 dKH
  • 425 ppm to 9.0 dKH
  • 450 ppm to 12.5 dKH
  • 475 ppm to 16.0 dKH


You can find this product in our distributor stores in France and Belgium, do not hesitate to visit the nearest store from your home    Our distributors

Weight 1 kg
Dimensions 18 × 18 × 14 cm

Royal Nature


4kg, 1kg, 1kg, 4kg

User type

Aquarist, Aquarist, Scientist, Scientist, Aquaculturist, Aquaculturist


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