Pond managers add dolomite to stabilise water pH and to raise alkalinity and hardness, and as a source of calcium and magnesium. Dolomite is a milder liming material than quicklime, so it is chosen where a gentler, longer-lasting effect is wanted.
Technical Specifications
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For: Dolomite for Aquaculture
Who this is for
Shrimp and fish farmers, hatcheries and aquaculture input dealers, mainly in the coastal states such as Andhra Pradesh and Tamil Nadu. Dealers usually buy 25 kg or 50 kg bags; larger farms buy jumbo bags.
Choosing granules or powder
Powder dissolves faster, so it acts sooner; granules dissolve slowly and are easier to spread by hand or broadcaster. Many farms use powder for the bottom before filling and granules for top-ups. Dose by water and soil tests, and follow your aquaculture adviser’s protocol; we do not set dosing rates.
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View full categoryFrequently Asked Questions
Is dolomite the same as agricultural lime?
No. Agricultural lime is mostly calcium carbonate; dolomite contains magnesium as well and acts more gently.
Can dolomite be used in a pond with fish in it?
Dolomite is milder than quicklime, but dose by water test and your adviser’s protocol; do not apply by guess.
Is there a technical guide?
Yes, our guide to dolomite in aquaculture covers pH, alkalinity and hardness management.