RPM Part 2 - Cal - Fritz Aquatics

Maintain strong skeletal growth and vibrant coloration in your reef with Fritz RPM Part 2 – a high-purity calcium supplement engineered to support the health of corals, fish, and invertebrates in marine aquariums. Formulated to deliver consistent and balanced calcium levels, this additive works in harmony with Fritz RPM Part 1 (Alkalinity) to sustain proper ionic ratios without introducing unwanted impurities.

Unlike many other dosing solutions, Fritz RPM contains no unmeasured trace metals or excess ions—making it a trusted choice for long-term coral health and reef stability.

Key Features:

 

• Ultra-pure calcium chloride solution for reef aquariums

• Maintains ideal calcium range (400–450 ppm) for coral calcification

• Free of unnecessary ions and heavy metals

• Designed for daily use or rapid adjustment

• Safe for all reef livestock, including sensitive inverts

• Made in the USA

 

Recommended Use:

Pair with Fritz RPM Part 1 – Alkalinity to maintain proper calcium-alkalinity balance. Always adjust magnesium levels before dosing if needed.

Adjustment Dosage:

Shake well before each use.

 

• 1 mL will raise calcium by 15 ppm per gallon

• 5 mL (1 tsp) will raise 10 gallons by 7 ppm

• Do not exceed 10 mL per 10 gallons per day

 

Routine Dosing:

Once calcium is within range, begin with:

 

• 5 mL of Part 1 and 5 mL of Part 2 per 20 gallons daily

• Adjust based on test results and system demand

 

Pro Tips:

 

• Dose in a high-flow area such as your sump

• Allow cloudiness to clear between adding Part 1 and Part 2

• Use reliable test kits to monitor calcium levels

• Caps on 4–16 oz bottles = 5 mL | Cap on 32 oz = 10 mL

• If overdosed, observe livestock and perform small water changes if needed

 

Ingredients:

Deionized water, Calcium Chloride

Guaranteed Analysis: Calcium (min) 55,000 ppm

For best results, use in combination with Fritz RPM Alkalinity and Fritz RPM Magnesium to complete your reef chemistry foundation.