Blackwater Extract (8.45 oz) Blackwater Extract contains trace elements, vitamins, and extract of peat. It replicates
blackwater conditions by creating clear, “natural,” Amazon-biotope conditions in the
aquarium. Blackwater Extract promotes fish activity levels and is an excellent conditioner
for all soft-water fish including discus, angelfish, tetras, and killifish. Two teaspoons treat
Good Stuff! by Paulie from Middletown,DE02/21/2014
If you keep Discus fish ,this should be a must use item. I have used this since I have first got my Discus over three years ago. The Black water extract helps to simulate their natural environment. My fish seem to thrive with the use of this product. I added it to every partial and complete water change.