By Bob Goemans
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Owners Name: Leonard Ho

Location: Los Angeles, CA, USA

Year the tank was set up: 1994

Size and Volume of the Tank: 120 gallon, 48" x 24" x 24"

Sump Size: 30 gallons

Pounds of Live Rock: 150 Pounds

Type of Biological Filtration: DSB/"Berlin"

Sand Type/Depth: 4 inches (20 cm) average, mixture of CaribSea Special Grade and Oolitic aragonite


Main system pumps: Iwaki MD30LRT, Iwaki MD30RLXT

Additional pumps: none

Monitoring Equipment: Neptune Aquacontroller

Protein Skimmers: Euro-reef CS6-2

Wavemakers: Sea Swirl, 1" and 3/4" models on opposing sides.

Dosers: LiterMeter III

Chiller: AquaLogic Delta 1/3 HP (plumbed outdoors)

Refugium: none


Lamps: Aqualine Aquaspacelight 250W x 2 DE 10K Metal Halides with 4 x 110W URI SuperActinic VHOs driven by Icecap 660 ballast.

Photoperiod:Halides on for 10 hours, actinics for 14 hours


Water Temperature: 78 - 81ºF

Specific Gravity: 1.025

PH: 8.2 - 8.5

Calcium:350 - 450 ppm

Redox: >400

Nitrate: variable, generally around 10 ppm

Nitrite: 0 ppm

Ozone: none used

Phosphate: Below detection, although I still have my share of reasonable microalgae growth

Additives: B-ionic

Water Changes: Infrequently, maybe 25% a year nowadays.

RO/DI water: Yes - RO/DI

Brand of Salt Mix: Instant Ocean


I feed my fish one ounce of Ocean Nutrition Prime Reef frozen cubes (thawed) with occasional Selcon-enriched live brine shrimp, frozen mysis shrimp, and chopped fresh seafood.

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