[Coral Reef Bowl - January 2004 unsexed]
Location / Keeper:
SALTWATER BOWL ENVIRONMENTAL PARAMETERS
25cm height X 30cm diameter
Sylvania GRO-LUX® Daylight Electronic Compact Fluorescent 20 watt lamp (with built in reflector) having an output of 875 lumens over an 80 degree spread placed within 1cm of the exposed water surface.
Hagen Fluval® 1plus internal power filter with Marineland Black Diamond® Premimum Activated Carbon (10cc), Seachem Phosguard® (10cc), and a small sponge filter (included with the power filter).
Aquarium Systems VisiTherm® 25 watt submersible heater set to 28C (82F) degrees.
Somoan Sand and live reef rubble rock.
Reverse Osmosis purified water mixed with Instant Ocean Reef Crystals® to a salinity that varies between 1.024 and 1.026 specific gravity. No other additives are used.
Approximately 1 liter of evaporated water is replaced every day with reverse osmosis purified water. The bowl is cleaned as needed (about every 3 weeks), which includes scraping algae off the glass with a single-edged razor blade and replacing the carbon and phosphate remover in the filter. Water and algae is then syphoned out of the bowl and replaced with new salt water resulting in approximately a 25% water change. I also have some growths of Caulerpa racemosa and Valonia that is manually removed as needed. In the past several months green cyanobacter algae has appeared in a few spots but is kept under control through the cleaning process and the addition of 1ml of 3% hydrogen peroxide every day.
Two scarlet-legged hermit crabs eat any hair algae that develops and numerous copepods eat the diatoms. There are no "turbo" snails, however there are many small snails and starfish that have reproduced in the bowl and contribute to some small degree in keeping the bowl clean. Two months ago I added a 7cm Tridacna crocea clam to control nitrates.
OTHER BOWL INHABITANTS
One Caulastrea and several species of Montipora, various Mushrooms, Star Polyps, Zoanthids and one Polychaete Worm (Feather Duster). There are also a few bristle / fireworms that seem to do no real harm, however, because of their bad reputation, I do remove them when I can catch them. In the beginning I had a 15cm Euphyllia ancora (Hammer Coral) that was removed for bad behavior, i.e. stinging everything with its sweeper tentacles.
None. All the inhabitants live in a balanced ecosystem where the only nutrient input is from the energy of the light (photosynthesis) and the chemical nutrients in the salt mix.