Salifert Potassium (K) Aquarium Test Kit
$19.99
- Ships any business day
- Products we use on our own reefs
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Product details
Product details
Salifert Potassium (K) Aquarium Test Kit measures potassium (K) levels in a reef aquarium so you can confirm whether your tank is near natural seawater levels and adjust supplementation only when needed. Potassium concentration in natural seawater is approximately 400 ppm, and many aquarists find that low potassium values can reduce coral color. Use this kit as a practical way to determine your tank’s potassium in ppm and decide whether potassium products are helping or whether your system may not require further supplementation.
Features:
- Designed specifically for measuring potassium (K) in reef aquariums
- Uses a titration approach with a clear end-point color change from yellow to blue
- Reports potassium concentration in ppm for dosing decisions
- Fast workflow: potassium reef testing can be performed in about 90 seconds
- Supports adjustment of potassium supplementation by confirming current K levels
- Helps you avoid unnecessary dosing after you test, especially if you already use potassium products
Specifications:
- Target reference value: Potassium concentration in natural seawater is approximately 400 ppm
- Test time: About 90 seconds
- Measured result unit: ppm
- Accuracy: Plus or minus 3 ppm
- Reaction color change: Yellow to blue end-point
- Sample volume: 1 ml aquarium water added to the vial
- Reagent 1: 0.5 ml, then swirl for about 20 seconds
- Reagent 2: Three drops added
- Reagent 3: Added drop by drop until color shifts from white into blue; swirl after each drop
- Cleaning: Clean vial after each use




