Seachem Ph Alert ATO Exhaustion is indicated by a

Exhaustion is indicated by a pronounced discoloration of the beads to a deep blue black color

Coral Colors C

Carbonate hardness stabilizes aquarium pH

Intake Stem with intake strainer

Seachem Ph Alert ATO Exhaustion is indicated by aProduct Description pH Alert is a unique color device designed to be placed in the aquarium or filter and monitor pH continuously. A sensor changes color reversibly to alert you shifts to in pH levels between 5. 8 and 8. 2. No tests, no strips, just constant readings. Freshwater Only. Why Its Different pH Alert lasts up to 4 times as long as competing products. pH Alert is also almost half the size of competing products. It's small, clear, and