Product DescriptionFluval Peat Granules are the all-natural way to soften aquarium water and achieve the pH levels required for breeding and rearing certain tropical fish. Peat contains humic acid, tanning agents, and trace elements that are essential for various life processes. Highly concentrated for maximum effectiveness, Fluval Peat Granules are recommended for fish that prefer soft, acidic water (i.e. Amazonian cichlids, discus, and angelfish). To ensure optimal conditions, it's best to test the water with Nutrafin pH and KH test kits on a regular basis to verify that desired levels are being maintained.Fluval first broke onto the aquatic scene in 1975 by introducing the world?s first 3-stage filter with synchronous motor technology - a landmark breakthrough that is still applied in the industry today. Since then, Fluval has built a legacy around this pioneering spirit, relentlessly adapting in a changing world to launch innovative aquarium products that remain at the forefront of technology, and which set the bar in quality, style and functionality. Above and beyond its manufacturing role, Fluval prides itself on its charitable and educational efforts that give back to the fishkeeping community, whether it means helping to fund the protection of wild coral reefs or jumping on a plane to document endangered fish species halfway around the world. Fluval?s mission is not just about building products that mimic the natural world, but inspiring aquarists of all skill levels to enjoy and respect the hobby for generations to come.Amazon.comFluval Peat Granules, 500 Gram/17.6 OunceFluval Peat Granules are the all-natural way to soften aquarium water and achieve the pH levels required for breeding and rearing certain tropical fish. Peat contains humic acid, tanning agents, and trace elements that are essential for various life processes. Highly concentrated for maximum effectiveness, Fluval Peat Granules are recommended for fish that prefer soft, acidic water. To ensure optimal conditions, it's best to test the water with Nutrafin pH and KH test kits on a regular basis to verify that desired levels are being maintained. Fluval FiltersModelFluval 106Fluval 206Fluval 306Fluval 406Fluval G6Fluval Fx6Aquarium Capacity25 US Gallons45 US Gallons70 US Gallons100 US Gallons160 US Gallons400 US GallonsDimensions15 X 6 X 8 inches18 X 7 X 8 inches18 X 7 X 10 inches20 X 8 X 10 inches10 x 9 x 13 inches 16 x 16 x 21 inchesPump Output145 US Gal/h206 US Gal/h303 US Gal/h383 US Gal/h650 US Gal/h925 US Gal/hFilter Circulation95 US Gal/h121 US Gal/h206 US Gal/h245 US Gal/h265 US Gal/h538 US Gal/hHead Height (max.)4.8 ft4.8 ft5.6 ft7.5 ft4.8 ft7.6 ftMedia Capacity3.2 Liters4.6 Liters6.6 Liters8.5 Liters9.5 Liters11.5 LitersWattage120V/60Hz: 10W120V/60Hz: 10W120V/60Hz: 16W120V/60Hz: 23W120V/60Hz: 27W120V/60Hz: 43WFluval MediaFluval CarbonFluval Carbon, 100-gram Nylon Bags - 3-PackFluval Carbon Filter Media Insert is capable of adsorbing most liquified impurities and dyes present in aquarium water. It does not contain phosphates and will not change the pH of the aquarium water.Fluval Foam Filter BlockFluval Foam Filter Block (204/205/306 & 304/305/306)- 2-PackFluval Aquarium Filter Foam Blocks provide mechanical straining of particulate waste. It prevents particulate waste from prematurely clogging other filter media in the module stack. Fluval Biomax Bio RingsFluval Biomax Bio Rings - 500 grams/17.63 ouncesFluval BioMax Media Inserts have a complex pore system creating an optimal environment where beneficial bacteria can thrive.Fluval Ammonia RemoverFluval Ammonia Remover, 180-gram Nylon Bags - 3-PackFluval Ammonia Remover is a natural ion-exchange media designed to remove toxic ammonia as water passes over it. Controlling ammonia levels reduces stress on fish