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POTO Afterburner, October 18, 2026 (keeper-provided date), photographed in cloudy, more turbid water; darker coloration and very limited polyp extension.

Living Reef Observatory

POTO Afterburner

Acropora sp.

Recorded health: Stressed · Active

Photographed October 18, 2026

Cloudy water reduced photo clarity and limits color comparisons with September. Darkening was also observed directly.

POTO Afterburner is an Acropora grow-out colony Acquired from Pieces of the Ocean in July 2024, it is being followed for growth, coloration, health, and responses to changing environmental conditions.

Source
Indonesia - POTO
Acquired
Jul 24, 2024
Identification
Trade Identification
System
Reef Cloverson Reef System
PAR
350 µmol m⁻² s⁻¹
Flow
Moderate
Husbandry notes

Maintained on the left side of the 60-gallon display at approximately 350 µmol m⁻² s⁻¹ PAR. Flow is multidirectional and variable, with predominantly gentle-to-moderate movement at the colony. The colony has remained fixed in this position. Local flow velocity has not yet been directly measured.

October 18, 2026 — Keeper reports a stressed colony: marked darkening and almost no polyp extension, with little growth across the system this month. Photograph taken in cloudy, more turbid water, limiting direct photo comparisons. Reported pH and alkalinity were exceptionally low; the pH probe needs replacement and pH readings are provisional. The carbonate environment is a suspected contributor, not a confirmed cause. Aiming for a healthier November.

Living Reef Observatory / Water history

Recorded water conditions

Salinity35 pptMaintained standard · not automated

Temperature

Mean = average of measured readings at the sampling-guide cadence for this time range. Estimates excluded.

Selected reading—
DateTimeParameterMeasurement
————

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Sampling guide
  • pH & temperature · 1 reading per hour (24 per day)
  • Alkalinity · 4 tests per day
  • Calcium, magnesium, nitrate & phosphate · 1 reading per day

Typical coverage. Dashed lines mark estimates.

Aquarium-system values, not measurements of this coral. Measured points retain Apex timestamps; estimated points use expected sampling times. Salinity is a maintained standard.

Monthly observations

Scroll or swipe to compare monthly records.

POTO Afterburner · September 18, 2026 POTO Afterburner (RC-ACR-001), photographed September 18, 2026 at 7:00 p.m. Eastern. POTO Afterburner Readings at photo time Temperature 77.7°F pH 8.02 Alkalinity 5.54dKH Calcium 496ppm Magnesium 1446ppm Nitrate 2.8ppm Phosphate 0.13ppm Salinity 35ppt Maintained Photographed September 18, 2026 reefcloverson.com

Details & downloads
PNG · 1080 × 1080

Water data

POTO Afterburner

Photographed

Readings at photo time

POTO Afterburner (RC-ACR-001), photographed September 18, 2026 at 7:00 p.m. Eastern.

Temperature

77.7°F

pH

8.02

Alkalinity

5.54dKH

Calcium

496ppm

Magnesium

1446ppm

Nitrate

2.8ppm

Phosphate

0.13ppm

Salinity

35ppt

Maintained standard
Not automated

Monthly statistics are unavailable.

About these statistics

Variation is the standard deviation. It describes how widely readings were spread around the monthly average.

Range is the lowest to highest measured value.

Measured readings only. Estimates are excluded.

LIVING REEF OBSERVATORYreefcloverson.com
POTO Afterburner · October 18, 2026 POTO Afterburner, October 18, 2026 (keeper-provided date), photographed in cloudy, more turbid water; darker coloration and very limited polyp extension. POTO Afterburner Readings at photo time Cloudy water at capture · pH readings provisional Temperature —°F pH — Alkalinity —dKH Calcium —ppm Magnesium —ppm Nitrate —ppm Phosphate —ppm Salinity 35ppt Maintained Photographed October 18, 2026 reefcloverson.com

Stressed

This was the only colony to darken this month. It also lost almost all polyp extension.

Details & downloads
PNG · 1080 × 1080

Observation notes

Growth

Little growth across the system this month. Growth was not measured.

Water chemistry

pH and alkalinity were unusually low this month. The pH probe needs replacing, so those pH readings may be inaccurate.

Photograph conditions

Cloudy water reduced photo clarity and limits color comparisons with September. Darkening was also observed directly.

Working interpretation

Low pH and alkalinity may have limited calcification. Their role in this colony’s decline is uncertain.

Next steps

Replace the pH probe and check the readings. Aim for better growth and polyp extension in November.

Water data

POTO Afterburner

Photographed

Readings at photo time

POTO Afterburner, October 18, 2026 (keeper-provided date), photographed in cloudy, more turbid water; darker coloration and very limited polyp extension.

Temperature

—°F

pH

—

Alkalinity

—dKH

Calcium

—ppm

Magnesium

—ppm

Nitrate

—ppm

Phosphate

—ppm

Salinity

35ppt

Maintained standard
Not automated

Monthly statistics are unavailable.

About these statistics

Variation is the standard deviation. It describes how widely readings were spread around the monthly average.

Range is the lowest to highest measured value.

Measured readings only. Estimates are excluded.

LIVING REEF OBSERVATORYreefcloverson.com