Seachem PH/Ammonia Alerts Combo Pack, 2 Monitors per Pack (3 Packs) auspowers_batchthree surface mount blue light for

surface mount blue light for vertical transoms

Its enough space could organize more objects

heat-resisting and easy to use

DC-: to connect the power negative 3

and each alarm will last 10 seconds

Seachem PH/Ammonia Alerts Combo Pack, 2 Monitors per Pack (3 Packs) auspowers_batchthree surface mount blue light forSeachem PH Ammonia Alerts Combo Pack, 2 Monitors per Pack (3 Packs) ALERTS COMBO PACK 1 YEAR 24 Product Features Seachem sensor technology continuously monitors ammonia and freshwater ph No tests, no strips, just constant readings Ammonia alert lasts 1 year for freshwater & marine Ph alert lasts 3 6 months, freshwater only