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Q: I've found this product to be absolutely superb at swiftly lowering phosphate and nitrate levels, however, I'm uncertain if I can use it to remove these ions in a blackwater system, since the product also claims to remove 'other organics'. Would tannic acid be one of organic molecules it removes?
A: I would continue to use Hypersorb as any other resin or carbon will be more aggressive at removing the tannins, colors, etc. Because of that, Hypersorb would be my first choice. My second choice would be Renew which we sell as an economical and less aggressive alterative to carbon.
Q: Would it be better to use HyperSorb or Purigen in a reef aquarium?
A: I would definitely prefer Purigen over Hypersorb because Purigen has a much greater capacity for organic removal in salt water than Hypersorb.
Q: Can you use Seachem's The Bag as the filter bag for Hypersorb in the bulk form?
A: Absolutley, The Bag is designed to hold all of our chemical filtration medias, including Hypersorb. It will also stand up to bleach and acid when necessary to regenerate our resins.
Q: I set up a tank with HyperSorb as my filtraion media and my turned an orange/brown color. m I using too much HyperSorb?
A: HyperSorb is an adsorbent media/resin that is incapable of leaching anything into the water column. The orange (brown?) shade you speak of could possibly be due to the leaching of organic acids by driftwood, peat, or other organic material if present in your system. If it is a new aquarium, it could also be a bacterial bloom due to an establishing biological filter. HyperSorb should not need to be rinsed prior to use.