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They are a complete pet food for fish
Based on Reef-Roids' proven formula
Flow rate: 4000 lts/hr
Red Sea DipX
Fritz 35ppt Calibration Solution 1.25oz / 37ml TMC They are a complete petPre measured refractometer calibration solution takes the guesswork out of properly calibrating your instrument with no need for expensive or unreliable measuring equipment. A refractometer is essential to the saltwater hobbyist for success. Maintain its accuracy by recalibrating regularly. Shake bottle well before application. Ensure the refractometer prism surface is clean, wipe with distilled or RO water if necessary and dry with a cloth. Add 2 3