Stunning 400-Gallon Reef Tank by Greg Timms | ReefKeeping

full tank shot of: Stunning 400-Gallon Reef Tank by Greg Timms | ReefKeeping
reefkeeping 2010

Tank Specifications

Volume: 400 Gallons / 1514 Liters

Dimensions (L × W × H):
96.0" × 36.0" × 27.0"
243.8cm × 91.4cm × 68.6cm

Equipment List

  • Salt: Caribsea

Frequently Asked Questions

How do I create a stable aquascape for my reef tank?

To create a stable aquascape, select high-quality live rock and drill holes in it to zip tie pieces together for added stability. This prevents the rock work from toppling over as your fish and corals grow.

What is the best substrate for a reef tank?

Using a shallow sand bed (1-3 inches) can enhance biodiversity and provide a suitable habitat for sand-sifting species. Caribsea 'Special Grade Seaflor Reef Sand' is recommended due to its coarse particles that minimize sand storms.

What should I include in my filtration system?

A robust filtration system can include a protein skimmer, live rock, a refugium with macroalgae (like Chaetomorpha), and Reactors for phosphate removal, as well as activated carbon for chemical filtration.

How do I maintain water clarity and quality in my reef tank?

Change your pre-filter socks bi-weekly, replace carbon monthly, and carry out weekly 5% water changes. Also, monitor and adjust your chemical parameters regularly to ensure a healthy environment.

What is the ideal lighting setup for a mixed reef tank?

A combination of Metal Halides (HQI) and T5 lighting should be used to achieve good PAR and coral coloration. For example, using DE 250 watt & 150 watt bulbs along with T5 fixtures for full-spectrum light is effective.

What lighting schedule should I follow for optimal coral health?

A lighting schedule that mimics natural conditions is recommended, such as: 9:30 AM - Actinic T5 lights on, followed by Metal Halides turning on by 9:45 AM. Aim for a total daylight duration of approximately 12-13 hours.

What are the ideal water parameters for a successful reef tank?

Maintain a specific gravity of 1.026, pH between 8.1 - 8.4, calcium at approximately 435 ppm, alkalinity at 8-8.5 dKH, magnesium between 1350-1400 ppm, and temperature around 77-80°F.

How can I maintain calcium and alkalinity levels in my reef tank?

Using a two-part dosing system, such as Randy Holmes-Farley’s recipes, can effectively maintain calcium and alkalinity levels. Adjust daily doses according to your tank's consumption rates to keep these levels stable.

How should I feed my reef inhabitants?

Use an auto-feeder to provide small portions multiple times a day. A mix of quality pellets, flakes, and occasional foods like nori or mysis shrimp helps ensure that all fish, especially less assertive species, receive adequate nutrition.

What types of fish work well in a mixed reef tank?

A diverse selection of reef-safe fish, such as various tangs, gobies, wrasses, and clownfish, provide both beauty and functionality. Ensure that the species selected are compatible and have enough space to establish their territories.

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