Seachem Alert Combo Ammonia & pH Continuous Readings Spares Fluval 307 Aquarium External Filter

Fluval 307 Aquarium External Filter 1150L/h for Tanks up to 330L

Genuine Oase / Pontec Foam Sets

Suitable for glass thickness up to 16mm thick

Please follow installation instructions on side of package

Seachem Alert Combo Ammonia & pH Continuous Readings Spares Fluval 307 Aquarium External FilterSeachem Alert Combo Ammonia & pH Continuous Readings The Alert Combo pack combines Ammonia Alert (1 card) and pH Alert (1 card). Ammonia Alert and pH Alert are almost half the size of competing products. At 1. 5" x 2. 5", they are small, clear, and unobtrusive, so they won't detract from the view of your aquarium. Simply place Ammonia Alert and pH Alert visibly anywhere in the aquarium or filter. Its that easy. No chemicals or test procedures are