Thank you for visiting the Seachem Support and Discussions Board. Certified Seachem technical support specialists are active Monday-Friday, 9:00 AM-5:00 PM EST. Any questions posted over the weekend will be addressed the following Monday.
Yes, Pond Matrix is suitable for a saltwater aquarium. It is a larger version of Matrix and is ideal for use in sumps for larger systems. In fact, we have it in all of our sumps here at the office and it works great! A better option for seeding the Pond Matrix would be to use our Stability. This is a bacterial supplement that contains the appropriate aerobic and anaerobic bacteria for the aquarium. You can simply add the Pond Matrix to your sump or filter and begin adding Stability daily for 7. This will help to quickly establish your biological filter. Than you can use the Stability as part of your routine maintenance by adding it at water changes, any time you add new fish or if you ever medicate. There will inevitably be some colonies that become compromised during these times and Stability will help to replenish them.
Yes, placing Matrix or Pond Matrix into your sump will be as effective, if not more so, than having many pounds of live rock. “Live” rocks or reef rocks remove nitrate by anaerobic denitrification. Pond Matrix removes nitrate by the same process. However, efficiency is magnified several folds by forcing the water to filter through the porous Pond Matrix. As with reef rock, anaerobic conditions are achieved by the porosity and the depletion of oxygen by the aerobic process at the surface. Because of the number and size of the internal pores, which create lots of anaerobic surface area, Pond Matrix houses denitrifying bacteria in both fresh and saltwater.