“Biodiversity” gets used a lot in reefing discussions, often as if the word itself explains something. It usually does not.Biodiversity is not meaningless. The issue is that it is almost never defined. It is...
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This week’s hottest
beananimalWhy the Redfield Ratio Misleads Reef Keepers
Understanding the Redfield ratio is easier than you thinkThe Redfield ratio has become one of the most confidently repeated misconceptions in the reef hobby, and as usual, my mission is to correct the record and stem...
Aquarium Salinity Adjustment Calculators
A series of simple calculators for various methods of adjusting your aquariums salinity.Raising Salinity by EvaporationGiven a tank volume, adding saltwater (of any concentration above 0) to that volume and then...
Tropic Marin Precision Hydrometer Correction Calculator
Hydrometer Correction ExplainedThe Tropic Marin Precision Hydrometer is widely regarded as one of the most accurate tools for measuring the salinity level of reef aquariums. This hydrometer measures specific gravity and...
