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Potassium and Iron
If necessary
Treats up to 378
Quickly Removes Toxins and Keeps Trace Elements in Balance
medium and fine
Maxspect Nano-Tech Anaerobic Block (2 Blocks) other plumbing Potassium and IronMaxspect Nano Tech Anaerobic Blocks are a new game changing innovation to "complete the nitrogen cycle" and compliment your filtration. Where the original Nano Tech bio blocks and spheres excel in housing aerobic bacteria these patented blocks excel at housing anaerobic bacteria. The denitrification catalyst supplied with the blocks increases the bacteria production within the massive surface area and ideal living conditions on the inside of the