Seachem PH Alert air accessories What is this refill used

What is this refill used for

Chemiclean works within 48 hours oxidizing trapped organic sludge and promoting an ideal enzyme balance

garlic and a broad range of key ingredients

including the anaerobic area of the filter

Seachem PH Alert air accessories What is this refill usedSeachem PH Alert Seachem PH Alert is a colour changing freshwater aquarium pH monitor for fishkeepers who want a continuous, visible indication of pH changes without using liquid test kits or test strips. Place this compact Seachem sensor in a visible area of the aquarium or filter to monitor pH levels from 5. 8 to 8. 2. Key Benefits Continuously monitors freshwater aquarium pH. Colour sensor changes reversibly as pH shifts. Provides a visible reading