Mars Water Softener Pillow
The Mars Water Softener Pillow is designed to improve water quality in soft water aquariums by removing common minerals and heavy metals.
- Contains resins to remove calcium, magnesium, and soluble heavy metal ions including copper and iron.
- Completely rechargeable for long-term use.
- Optimized for soft water aquarium environments.
- Treats up to 20 US gallons of water per cycle.
| Feature | Detail |
|---|---|
| Water Capacity | Up to 20 US gallons |
| Minerals Removed | Calcium, magnesium, copper, iron |
| Rechargeable | Yes |
| Use Case | Soft water aquariums |
FAQ
How often should I recharge the water softener pillow?
The pillow should be recharged every 3 to 4 weeks depending on water usage and aquarium size.
Can this pillow be used in saltwater aquariums?
No, this pillow is designed for soft water aquariums only and is not suitable for saltwater environments.
Does the pillow require any special maintenance?
Please contact customer service for maintenance instructions.

John Parsons –
I’ve used this pillow in my freshwater aquarium for three months now. The water clarity has improved noticeably, and the fish seem more active. It’s easy to refill and works well with my 20-gallon tank. No issues with mineral buildup so far.
Julian Howard –
The pillow effectively reduces hard minerals in my tank water. I recharged it every four weeks and it performed consistently. The reusability saves money over time, though it does take a bit of effort to clean the resin after each cycle.
Sue Hughes –
Great product for maintaining soft water in my aquarium. The filter works quietly and the water quality has stabilized. I noticed fewer algae issues since using it. Simple to maintain and fits well in my tank setup.