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Create safe, soft, and stable water conditions with Sera pH/KH Minus 100ml — a fast-acting freshwater water conditioner specially formulated to reduce carbonate hardness (KH) and safely lower elevated pH levels.
Many tropical fish, including Discus, Angelfish, Tetras, and other soft-water species, thrive in slightly acidic, low-hardness water. Sera pH/KH Minus quickly adjusts water parameters to create a healthier, more natural environment that supports fish wellbeing, vibrant coloration, and successful breeding.
The formula effectively lowers both carbonate hardness (KH) and pH, helping prevent unsuitable water conditions caused by hard tap water or naturally increasing pH levels. For long-term soft-water maintenance, it can be combined with Sera Super Peat after reducing KH to approximately 4°dKH.
• Brand: Sera
• Product Name: pH/KH Minus
• Product Type: Freshwater Aquarium Water Conditioner
• Volume: 100ml
• Quickly lowers carbonate hardness (KH)
• Safely reduces and regulates pH levels
• Creates soft, slightly acidic water conditions
• Ideal for soft-water tropical fish
• Helps create species-appropriate water parameters
• Supports fish health, vitality, and breeding
• Fast-acting liquid formula
• Suitable for routine aquarium water conditioning
• Can be combined with Sera Super Peat for long-term soft-water maintenance
• Easy-to-use dosing formula
• Freshwater aquariums
• Tropical aquariums
• Soft-water fish aquariums
• Discus aquariums
• Angelfish aquariums
• Community aquariums
• Breeding aquariums
• Test KH and pH before treatment.
• Add according to the dosage instructions on the product label.
• Increase treatment gradually and recheck water parameters before repeating.
• For permanent soft-water conditions, reduce KH to approximately 4°dKH and use Sera Super Peat in the filter.
Avoid sudden changes in water chemistry. Regularly monitor KH and pH values during treatment. Store tightly closed in a cool, dry place away from direct sunlight and out of reach of children.
Order processing and verification typically takes 2-3 business days depending on demand levels and product shortages.
The expected time of arrival is 8-15 business days.
You will always receive an email once your order is processed as well as a tracking number.
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
