Water Quality Assessment of Tilapia

ASSESSEMENT OF WATER QUALITY PARAMETER AQUA 3115 Activity #1 objectives Assessment Description Interpretation Measure the 5 important levels in freshwater ponds/tanks (pH, high range pH, ammonia, nitrite, and nitrate Evaluate the result of the water quality parameter assessment and identify potentia...

ASSESSEMENT OF WATER QUALITY PARAMETER AQUA 3115 Activity #1 objectives Assessment Description Interpretation Measure the 5 important levels in freshwater ponds/tanks (pH, high range pH, ammonia, nitrite, and nitrate Evaluate the result of the water quality parameter assessment and identify potential issues that may need attention. Determine the water quality of Tilapia Circular Tank and gain insights into the the health of aquatic environment materials procedures Step 1 Step 2 Step 3 Step 4 Collect a sample of water from freshwater tank using a clean container Gather the materials needed for testing freshwater samples Follow the direction indicated in the test kit Do a color comparison and record the results results and discussion Neutral: 7.0 Alkaline : 7.0 Acidic: 7.0 :7.6 > 7.0, therefore the pH level is considered as Alkaline. This determines the calcium content and magnesium content. The ideal pH level for Tilapia are between 6.5 - 9 Tilapia ph level Catfish PH Level side 1 7.6 7.6 side 2 7.6 7.0 middle 7.6 7.0 Total Mean 7.6 7.2 Remarks Acceptable Acceptable Neutral: 7.0 Alkaline : 7.0 Acidic: 7.0 :7.9> 7.0, therefore the high range pH level is considered as Alkaline. pH ranges for optimal growth are between 7 and 9. tilapia high range ph catfish high range ph side 1 8.0 7.4 side 2 7.4 7.4 middle 8.2 7.4 Total Mean 7.9 7.4 Remarks Acceptable acceptable General Levels above 0.02 mg/L is toxic to fish For Tilapia Concentrations should be around 0.5mg/l by ensuring that pH levels remain at least below 9.0 Note: 0 - 8.0 ppm (mg/L) are the same Tilapia ammonia catfish ammonia side 1 0.25 ppm 0 ppm side 2 0.25 ppm 0 ppm middle 0.25 ppm 0 ppm Total Mean 0.25 0 ppm Remarks acceptable Acceptable :mg/L = 0.9988590004 x ppm 0.9988590004 x 0.25 = 0.2497147501 mg/L Levels above Zero can harm fish Nitrite is toxic to fish at levels above 2.0 mg/L Note: 0 - 5.0 ppm (mg/L) are the same tilapia nitrite catfish nitrite side 1 0 ppm 0 ppm side 2 0 ppm 0 ppm middle 0 ppm 0 ppm Total Mean 0 0 Remarks Acceptable acceptable A Nitrate level of 40 ppm less is recommended for freshwater A levels above 100 mg/L have negative impact on growth and feed conversion of the fish. Note: 0 - 160 ppm (mg/L) are the same Tilapia nitrate catfish nitrate side 1 0 ppm 0 ppm side 2 0 ppm 0 ppm middle 0 ppm 0 ppm Total Mean 0 0 Remarks Acceptable acceptable conclusion Based on the result of the assessment on the water quality parameters of the circular tank at the College of Fisheries -where the species of Nile Tilapia are being cultured- the water quality under different levels falls under acceptable remarks. Activity #2 objectives Assessment Description Interpretation Measure the Turbidity of the water in ponds and identify the temperature and dissolved oxygen Evaluate the result of the water quality parameter assessment and identify potential issues that may need attention. Determine the water quality of the three ponds and gain insights into the the health of aquatic environment materials secchi disk DO Meter procedures For measuring Turbidity Step 1 Step 2 Step 3 Step 4 Select a pond sites that will be tested Get your Secchi Disk, submerge until the disk is no longer visible Read and record the measurement of disappearance Pull the disk until it is visible. Read and record the reappearance procedures For measuring Dissolved Oxygen and temperature Step 1 Step 2 Step 3 Step 4 On the same pond sites, test the DO and temperature using the DO meter Set-up the meter to reading Dissolved Oxygen Submerge the sensor of the DO meter to the pond, careful not to touch the soil underwater Wait until the meter stops reading and record the data. results and discussion results of group 2 TEMPERATURE: Ideal water temperature for growth is between 26-30˚C (BFAR 2013) DISSOLVE OXYGEN: Dissolved oxygen levels below about 6 mg/L can begin to have detrimental effects on pond life TURBIDITY (DEPENDS ON FISH CULTURED AND THE MANAGEMENT INTENSITY) turbidity range from 30-80 cm is good for fish health; 15-40 cm is good for intensive culture system and < 12 cm causes stress Pond 1 remarks Pond 2 remarks 28.8 ˚C acceptable Temperature Dissolved Oxygen 6.66 mg/l acceptable Disappearance 15 cm Reappearance Turbidity 5 cm 10 Pond 3 Remarks 30.9 ˚C acceptable 30.4 ˚C Accept able 4.47 mg/l not accept able 2.62 mg/l not accept able 10 cm not accept able 6 cm 8 22 cm not accept able 12 cm accept able 17 results of group 1 TEMPERATURE: Ideal water temperature for growth is between 26-30˚C (BFAR 2013) DISSOLVE OXYGEN: Dissolved oxygen levels below about 6 mg/L can begin to have detrimental effects on pond life TURBIDITY (DEPENDS ON FISH CULTURED AND THE MANAGEMENT INTENSITY) turbidity range from 30-80 cm is good for fish health; 15-40 cm is good for intensive culture system and < 12 cm causes stress Pond 1 remarks Pond 2 remarks 29.1˚C acceptable Temperature Dissolved Oxygen 4.22 mg/l not acceptable Disappearance 28 cm 19 28 cm 16 cm 10 cm 13 cm Reappearance Turbidity 22 accept able Pond 3 Remarks 33.3 ˚C acceptable 32.5 ˚C Accept able 4.45 mg/l not accept able 3.88 mg/l not accept able 14.5 accept able 20.5 accept able conclusion Based on the result of the assessment on the water quality parameters of the three selected ponds, majority of the ponds falls under not acceptable remarks. Therefore, to reach the level of dissolved oxygen, it is highly recommended to increase the usage of aerators and water flow. If recommendations are met it will also influence the levels of turbidity. AQUA 3115 THANK YOU FOR LISTENING group 2 Poblete yabut caleon villamia bhang rigor Jireh Mia Amor Micca darren Sharmaine micah juan salvador Jhun Shuk mike dave