pH,CO2, Alkalinity: Princ of Aquaculture

What is the pH of fish blood

7.4

True or False: CO2 is more soluble in wwater than oxygen

True

What is the optimum level of CO2 in water

<10

How many grams of alkalinity should be added to an aquatic system

7.14

How do fish absorb calcium

directly across their gills from the water

What occurs when hardness is too low

pumps fail→osmoregulatory failure→death

What is the limestone mechanism

adding limstone to consume free CO2 to create stable biocarbonate alkalinity to raise pH and increase buffering

What occurs when algae consumes CO2

pH rises

What occurs when organisms produce CO2

pH falls

True or False: you can effectively remove massive loads of CO2 chemically

False

True or False: its trustworthy to use quicklime

False: it creates another spike and can cause violent reactions

True or False: nitrate is good if maintained

True

What if in high amounts causes brown blood disease

nitrite

What is the toxic version of ammonia tha can cause acute CNS damage

unionized ammonia (NH3)

As pH increases what happens to the levels of NH3

increases

What occurs during low dissolved oxygen

increased gill ventilation→increased toxin uptake

Ways to corrrect nitrite spike

• water exchange

• boost biofiltration

True or False: in anaerobic conditions phosphorus is released

True

This process is the primary source of the highly toxic gas hydrogen sulfide and is characterized by a “rotten egg” smell

Sulfate reduction

Pyrite is stable and harmless when

its submerged and anaerobic

What is the result of the accumulation of geosmin

produces an earthy or dirt taste

What are the three criteria that you need to meet for securing a water source

• quantity

• quality

• reliability & legality