एक्वेरियम नमक और खारापन कैलकुलेटर

For 35 ppt (natural seawater), use about 35 g of salt per liter. Mix in a bucket until fully dissolved, then add to the tank. Always use a scale (grams) for the initial mix and a refractometer for the final check, never rely on cups for the final dose.

Reef tanks are usually kept at 35 ppt or 1.025–1.026 SG. Stability is more important than the exact number; match your water changes to avoid swings.

Use a refractometer or digital salinity meter. Many hobby refractometers are most accurate when calibrated with a 35 ppt / 1.026 calibration fluid (not 0 ppt). Hydrometers are cheaper but less accurate. Temperature affects readings, many refractometers are calibrated for 20°C.

No. Always dissolve salt in a separate container first. Adding undissolved salt can burn corals and fish (osmotic shock, chemical burns on gills and tissue) and cause local salinity spikes.

Displacement: rocks and sand reduce actual water volume, e.g. 80 lbs of rock in a 45‑gallon tank might leave only ~35 gal of water; dosing for 45 gal would overshoot. Salt brand: some "pro" or fortified mixes need slightly more or less weight to hit the same SG. Moisture: if the salt bag absorbed humidity, 100 g of "wet" salt has less actual NaCl than 100 g of dry salt. Always weigh with a scale and confirm with a refractometer.