Volume: 525 Gallons / 1981 Liters
Dimensions (L × W × H):
96.0" ×
42.0" ×
30.0"
243.8cm ×
106.7cm ×
76.2cm
To maintain optimal water parameters, regularly test your water for calcium, alkalinity, magnesium, nitrates, nitrites, ammonia, specific gravity, and pH. Aim for calcium levels between 375-450 ppm, alkalinity of 9-11 dKH, magnesium at 1250 ppm, and zero levels of nitrates, nitrites, and ammonia. Keep the specific gravity around 1.0245 and pH between 8.1 and 8.3. Regular water changes of 15% monthly using a high-quality salt mix like Bioassay Crystal Seas Sea Salt can help maintain these parameters.
For a large reef tank, consider a combination of biological and mechanical filtration. Use a protein skimmer, such as the Aerofoamer skimmer mentioned, to remove dissolved organics. Incorporate a 150-gallon sump for additional filtration and water volume, and utilize a refugium with a deep sand bed and live rock to promote biological filtration. A calcium reactor can be essential for maintaining calcium levels for coral growth.
It's generally recommended to perform water changes every month, with a volume of about 15% of the total tank volume. This helps to manage nutrient levels and replenish trace elements in the water, ensuring a stable environment for both fish and corals.
If your fish or corals appear unhealthy, first assess water parameters using reliable test kits. Nutrient imbalances or fluctuations in pH, alkalinity, and other parameters can stress marine life. Additionally, observe for any signs of disease or parasitic infections, and consider quarantining sick fish to prevent the spread of disease. Providing stable conditions and quality food can also help promote their recovery.
An ideal lighting setup for a reef tank often includes a combination of metal halide and actinic fluorescent lights. For example, using 7 - 400 watt metal halide lights combined with 4 ft. actinics can provide a balanced spectrum that supports photosynthesis in corals. It's important to adjust the duration of light exposure based on the needs of the coral species you keep; generally, 10-12 hours of light per day is sufficient.
The right light intensity can vary based on the type of corals you keep. Soft corals typically require lower light levels compared to SPS (Small Polyp Stony) corals, which thrive in high-intensity lighting. The best approach is to start with moderate light levels and gauge the response of your corals. Adjust the intensity incrementally to ensure they are thriving without bleaching or excessive discoloration.
SPS corals require stable water parameters, particularly higher levels of calcium and alkalinity. Regularly check and maintain calcium levels between 375-450 ppm and alkalinity at 9-11 dKH. Use a calcium reactor or kalkwasser for supplementation. Provide sufficient lighting and flow, as SPS corals thrive in well-lit and high-flow conditions that help prevent algae growth and promote their health.
To prevent algae growth on your corals, ensure that nutrient levels (nitrates and phosphates) are kept low. This can be achieved through regular water changes, proper feeding, and even using a refugium with macroalgae to outcompete nuisance algae. Good water circulation is also key, as it helps prevent detritus buildup and reduces local nutrient concentrations.