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Algae Growth Observation
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DateDay of ObservationNotes/Remarks (color, patch location, spread, etc.)
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Treated Water(Bleaching Powder) Untreated Water
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13/09/2025Day 1No algae visibleNo algae visible
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14/09/2025Day 2No algae visibleNo algae visible
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15/09/2025Day 3No algae visibleSlight green tint at Right side edge of pad
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16/09/2025Day 4No algae visibleTint spreading, still < 5 % .
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17/09/2025Day 5No algae visibleTint spreading, still < 10 % .
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19/09/2025Day 6No algae visibleSlight algae in middle section
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20/09/2025Day 7No algae visibleSlight green tint at left side edge of pad
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21/09/2025Day 8No algae visibleDark green tint at right side of pad
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22/09/2025Day 9No algae visibleDark green tint at left side of pad
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23/09/2025Day 10No algae visibleSmall algae patch visible at middle section, slight green tint (<5% area)
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24/09/2025Day 11No algae visible algae patch visible at middle section, slight green tint (< 10 % area)
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25/09/2025Day 12--
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26/09/2025Day 13No algae visible
Algae presence increasing gradually, not easily visible on surface .
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27/09/2025Day 14No algae visible
Algae presence increasing gradually, not easily visible on surface .
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28/09/2025Day 15No algae visibleAlgae still not clearly visible on surface, starting to spread gradually
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29/09/2025Day 16No algae visibleAlgae growth increasing slightly, still not easily seen
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30/09/2025Day 17No algae visibleAlgae spreading further, minor patches visible on pad edges.
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01/10/2025Day 18No algae visibleAlgae present in more areas, but surface largely looks clean.
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02/10/2025Day 19-Observation not recorded / no significant change noted.
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03/10/2025Day 20No algae visibleAlgae now clearly visible on pad surface, covering noticeable sections
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04/10/2025Day 21No algae visibleAlgae coverage increased, surface largely covered with green patches
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05/10/2025Day 22No algae visibleAlgae coverage increased slightly ,overall condition remained similar
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06/10/2025Day 23No algae visibleAlgae coverage increased slightly ,overall condition remained similar
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07/10/2025Day 24No algae visibleAlgae coverage increased slightly ,overall condition remained similar
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08/10/2025Day 25No algae visibleAlgae coverage increased slightly ,overall condition remained similar
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09/10/2025Day 26No algae visible-
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10/10/2025Day 27No algae visibleAlgae coverage increased slightly ,overall condition remained similar
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11/10/2025Day 28No algae visibleAlgae coverage increased slightly ,overall condition remained similar
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12/10/2025Day 29No algae visibleAlgae coverage increased slightly ,overall condition remained similar
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13/10/2025Day 30No algae visibleAlgae coverage increased slightly ,overall condition remained similar
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17/10/2025Day 34No algae visibleAlgae coverage increased slightly ,overall condition remained similar
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24/10/2025Day 41No algae visibleAlgae coverage increased slightly ,overall condition remained similar
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31/10/2025Day 48No algae visibleAlgae coverage increased slightly ,overall condition remained similar
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08/11/2025Day 49No algae visibleAlgae growth is clearly visible on the cooling pad surface
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15/11/2025Day 55No algae visibleAlgae growth is clearly visible on the cooling pad surface
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Week No.DateNotes/Remarks (color, patch location, spread, etc.)
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Treated Water
Untreated Water
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Week 113/09/2025No algae visible
Cooling pad is clean and dry; no visible algae growth. Cellulose structure fully visible.
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Week 220/09/2025No algae visible
Slight darkening observed at the lower edge of pad, no visible algae yet.
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Week 327/09/2-25No algae visible
Thin green film starts forming at the base and corners. Early algae colonization seen on continuously wet areas.
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Week 44/10/2025No algae visible
Green colouration noticeable on lower half of the pad. Algae spreading upward.
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Week 511/10/2025No algae visible
Moderate algae growth; patchy green and brown zones visible. Slight clogging observed .
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Week 618/10/2025No algae visible
Dense green growth on 60–70% of surface. Top area still cleaner.
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Week 725/10/2025No algae visible
Algae layer thickens and turns darker green to brownish-green. Airflow through pad slightly reduced; slime accumulation visible.
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Week 81/11/2025No algae visible
Full pad covered with thick green film. Flow resistance increased; detached algae seen floating in tray water.
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Week 98/11/2025No algae visible
Thick, mature algae layer across pad. Greenish-brown colouration, clogged structure notice.
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Week 1015/11/2025No algae visible
Complete algae mat formation. Brownish-green thick layer blocks airflow. Strong odour of algae noticable.
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