Seachem Prime 500ml – Water Conditioner for Freshwater and Saltwater Aquariums
Seachem Prime is a reliable water conditioner designed to remove chlorine, chloramine, and heavy metals from aquarium water. It is safe for both freshwater and saltwater tanks, helping to protect fish and invertebrates from harmful chemicals.
Prime detoxifies ammonia, nitrite, and nitrate, allowing the biological filter to process these compounds more efficiently. This supports stable water conditions and promotes a healthy aquatic environment.
It does not alter the pH level of the water, making it a safe and effective solution for routine water changes and tank maintenance.
| Key Features |
|---|
| Removes chlorine and chloramine |
| Detoxifies ammonia, nitrite, and nitrate |
| Safe for freshwater and saltwater tanks |
| Does not affect pH level |
| 500ml bottle size |
FAQ
Does Seachem Prime affect the pH of the water?
No, Seachem Prime does not affect the pH level of the water.
Can Seachem Prime be used in saltwater tanks?
Yes, Seachem Prime is safe and effective for both freshwater and saltwater aquariums.
How much Seachem Prime should I use per 500ml of water?
One dose of 500ml is sufficient for 500ml of aquarium water. Follow the recommended dosage for your tank size and water conditions.

Natalie Grant –
I’ve used Seachem Prime for several months now and it’s made a big difference in my freshwater tank. The water changes are much safer for my fish, and the ammonia levels have stabilized. No pH changes, which is exactly what I needed.
Stephanie Paterson –
Great product for removing chlorine after water changes. My betta fish didn’t show any stress signs, and the tank water has been cleaner and more stable since I started using it.
Benjamin Mathis –
Works perfectly in both freshwater and saltwater setups. I use it every time I do a water change and it’s become a must-have in my aquarium routine.