Το κειμενο λεει οτι αν το ph ειναι κατω απο το 7 τοτε η αμμωνια γινεται αμμωνιο που δεν ειναι τοξικο...
Οποτε αν εχουμε το συγκεκριμενο σε ph 6.5 και για καποιο λογο το φιλτρο δεν δουλεψει και ανεβασει αμμωνιο, το ammonia alert δεν θα δουλεψει..
Αν ανεβει το ph πανω απο 7 τοτε θα το δειξει...
Παντως απο την εμπειρια σε αποτομα οverstocked ενυδρεια που αναγκαστικα εμφανιζεται αμμωνια, το ph πρεπει να ειναι πολυ κατω απο 7 για να μην υπαρχουν προβληματα. (ως προβληματα θεωρω να εμφανιζονται τριχες και καψιματα στις ακρες των πτερυγιων και να μην τρωνε...)
http://www.seachem.com/support/FAQs/...aAlertFAQ.html
A:The technology of this device is very unique to our company and has been an excellent seller for many years to hobbyists, breeders, and public facilities alike. The Ammonia Alert is designed to change color in the presence of free (gaseous) ammonia, not ammonium (ionized ammonia) which is harmless to fish and other aquatic life. The longer it is left in a particular body of water/aquarium, the more sensitive it becomes to that water. Most conventional test kits test total ammonia which is a combination of free ammonia + ammonium = total ammonia. PH is the determining factor on what type is present. If your pH is acidic (below 7.0), it is chemically impossible for ammonia (harmful gas) to exist. Yet a total ammonia test kit will register a reading because it detects both the free ammonia (harmful gas) and ammonium (harmless ionized form of ammonia). The more basic your pH becomes, the greater the chance of ammonia existing. Example: If you have 1.0 ppm of total ammonia and your pH is below 7.0, then 1.0 ppm will exist as ammonium. Ex. If you have 1.0 ppm of total ammonia and your pH is 7.6 (slightly basic), then of that 1.0 ppm total ammonia......only .2 or so would exist as a gas and the other .8 would exist as ammonium.