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Hygger Auto Top System – HG987
The Hygger Auto Top System (HG987) is an automatic water refill and drainage solution designed to maintain stable water levels in both freshwater and marine aquariums. By compensating for daily evaporation and enabling controlled water removal, this system helps preserve consistent salinity, water chemistry, and overall aquarium stability—critical factors for healthy fish, plants, and corals.
Product Highlights
• Automatically maintains a constant water level
• Suitable for both freshwater and saltwater aquariums
• Supports automatic top-off and controlled drainage
• Reduces manual topping up and human error
• Ideal for open-top aquariums and high-evaporation systems
Automatic Water Level Management
Evaporation can lead to fluctuating water levels and unstable parameters, especially in marine systems where salinity changes rapidly. The HG987 continuously monitors the aquarium’s water level and automatically replenishes lost water, ensuring a stable environment without daily manual intervention.
Dual Function: Refill and Drain
In addition to topping off evaporated water, the system allows controlled water drainage. This makes it useful during maintenance routines such as partial water changes, system flushing, or preparing tanks for cleaning—without the need for siphons or buckets.
Designed for Reliability and Safety
The system is engineered for consistent performance and safe operation, helping prevent overfilling and water level fluctuations. Its automated operation makes it particularly useful for aquariums that are left unattended for extended periods, as well as professionally maintained systems where consistency is critical.
Suitable Applications
• Freshwater aquariums
• Marine and reef aquariums
• Open-top tanks with high evaporation rates
• Systems requiring stable salinity and water chemistry
Usage Notes
The Hygger Auto Top System is intended to be used with a suitable freshwater reservoir for top-off water. Proper setup and secure hose routing are essential to ensure accurate operation and prevent unintended water transfer.
