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Favia favus
A hardy massive LPS with maze-like grooves; tolerant of less stable conditions.
PAR Meter
Refractometer
Canister Filter
Aquarium Thermometer
Cyanobacteria (Blue-Green Slime)
Slimy blue-green or dark purple patches with a foul odor.
Cloudy Water
Milky or hazy water that never fully clears.
Old Tank Syndrome
Water quality slowly worsens over months or years despite regular small water changes.
Common coral problems
Compatibility checker
Salt mixing calculator
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