Seachem Alert Combo Sera O-Nip but refrigeration after opening is

but refrigeration after opening is recommended and will prolong its shelf life significantly

Fresh Carbon Premium Activated Pelletized Carbon has a high hardness value to reduce dust

it takes up the space where unwanted organisms might normally grow

this is of particular benefit in heavily-stocked

Strontium chloride

Seachem Alert Combo Sera O-Nip but refrigeration after opening isSeachem sensor technology. Includes Ammonia Alert and pH Alert. Continuously monitors ammonia and freshwater pH. No chemicals or test procedures are required. Overview: 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