GLOSSARY 

AEROBIC - requiring oxygen
ALGA -  a plant that is photosynthetic and reproduces by releasing spores.
ALKALINITY - the buffering ability of seawater
ANAEROBIC -  needing no oxygen to survive
AQUACULTURE -  the farming of freshwater and saltwater organisms
ARAGONITE -  a mineral made of mostly calcium carbonate
AQUASCAPING -  the artful arranging of plants, substrate and rocks in an aquarium
BARRIER REEF -  a reef that is separated from land in a shallow area
BIOMASS - total amount of material in a single organism
BLADE -  the leaf like structure on macro algae.
BLADDER -  the float on species such as Sargassum and Botryocladia that allow algae to stand upright.
BRANCH LETS -  small projections from the main branch
CALCIFIED -  having calcium carbonate deposits within or on the plant
CLASS -  a group of related organisms
COLONY -  an organism made up of connected individuals
CORALLINE ALGAE -  a calcareous algae that encrusts
CYSTOCARP -  a reproductive formation on female Rhodophyta
DENITRIFICATION -  the process of converting nitrate to nitrogen gas
DETRITUS -  the build up of sediment and organic material 
DIATOMS -  a micro algae, rich in silica, that grows as a film
DOSING -  adding chemicals or elements in small quantities
ECOSYSTEM -  the combined physical and biological components of an environment
ENVIRONMENT -  the combined physical, chemical and biological surroundings
EPIPHYTE -  an organism that lives on plant material but does not prey on it
FAMILY -  a group of related organisms
FILAMENTS -  a slender row of plant cells
FROND - the blade or leaf of macro algae
GENUS -  a group of multiple related organisms
HABITAT -  the environment where an organism grows
HOLDFAST -  a root like structure that algae posses to attach themselves
KELVIN -  a measurement of the color temperature of light
LAGOON -  a protected area behind the reef
LIVE ROCK -  harvested or cultured rock from the ocean that contains organisms and bacteria 
MACRO ALGAE -  large multi-celled algae
MICRO ALGAE  - small single celled algae
NUTRIENT -  a chemical or element required for growth
OOLITIC -  a very fine form of aragonite sand
PHOTOSYNTHESIS -  the ability to convert sunlight into food
PROLIFERATE -  the formation of new frond on an older part of the plant
REFUGIUM -  a separate appendage to an aquarium that provides sanctuary for organisms
RHIZOID -  the root like structure of macro algae
RHIZOME -  the horizontal runner or stem of macro algae
SPECTRUM -  the colors in visible light when separated using a prism
SPORE -  a reproductive structure that forms new organisms.
SPORULATION -  the release of reproductive spores into the water to form new organisms
STOLON -  the stem connecting individual fronds
UPRIGHT -  the vertical structural branch of macro algae 
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