A pH level between 7 and 8.4 should be maintained. Marine creatures do not like shifts in pH, since a one unit shift in pH represents a 10 fold change in hydrogen ion concentration.
The pH of natural sea water is usually very stable and ranges from 7.5 to 8.4. In re-circulation systems where seawater is reused, bio-filters that remove ammonia consume alkalinity. Therefore pH is always falling (more acidic) and the operator has to counter this. Addition of activated carbon to a bio-filter will help to maintain a pH level above 7.5 because it also inhibits a buildup of acid substances in the system. Its use has been found to reduce mortality by up to 10%.
Perhaps the best way to control pH is by adding carbonate to the system using an automatic dosing pump controlled by the CCP Minder – a planned option.
The critical control points, at which alarming occurs, is adjustable by the operator.
The pH of natural sea water is usually very stable and ranges from 7.5 to 8.4. In re-circulation systems where seawater is reused, bio-filters that remove ammonia consume alkalinity. Therefore pH is always falling (more acidic) and the operator has to counter this. Addition of activated carbon to a bio-filter will help to maintain a pH level above 7.5 because it also inhibits a buildup of acid substances in the system. Its use has been found to reduce mortality by up to 10%.
Perhaps the best way to control pH is by adding carbonate to the system using an automatic dosing pump controlled by the CCP Minder – a planned option.
The critical control points, at which alarming occurs, is adjustable by the operator.
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