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Thrive 6 Potassium Refill 20.3 oz (600ml)

Thrive 6 Potassium Refill 20.3 oz (600ml)

On sale$7.50
Note: Non-stock Special order item, ships directly from distributor usually within 3-4 days. We have 0 Quantity in stock
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Part Number:850699002256

This product is designed to increase potassium in your SPS or low nutrient reef aquarium. Some reef aquariums will need supplementation of potassium for montipora and other SPS to thrive. Potassium may also be depleted by bacteria.

High Concentrations

This is a saturated solution of potassium sulfate and potassium chloride. This means you won’t find this blend of potassium any stronger. You may find stronger solutions made with more potassium chloride, but we feel that too much potassium chloride may brown corals.


Determine the potassium in the aquarium before supplementing. For best results obtain a Thrive Prescription at your local fish store or at If not using a Thrive Prescription: Add 1 ml per 10 gallons daily until the desired potassium target is obtained. Then dose weekly as needed to maintain potassium at 390 ppm to 420 ppm. Dosing without testing is not recommended. Advanced Directions: Each ml of Potassium will increase the potassium in 1 gallon of water by 6.2 ppm . Add Potassium at the maximum rate of 1 ml per 1 gallons every day until your target potassium is reached. Then dose weekly as needed.

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