You may consider more GPH power if you have a lot of fish, plan on getting more fish, or in general worry about ammonia buildup. Many fish tank filters rely on foam cartridges that capture waste ...

They color cartridges are currently available in 20 shades: three black, five blonde, 10 brown and two brown/red, with formulas free of ammonia, parabens, phthalates, SLS, SLES and silicones.