Aquarium Systems Poly-Media Twin Disc 73mm

PolyMedia absorbs and adsorbs contaminants and other toxic materials, which either naturally formed or are added to aquaria. PolyMedia cannot desorb harmful materials back into the aquarium/terrarium water at any time.

PolyMedia is non-toxic and harmless to biological filtration, because it allows sufficient ammonia to reach the biological filter to sustain the nitrifying bacteria.

• Blue – Copper salts
• Blue-green – Ionic copper
• Greenish yellow – Ammonia/ammonium
• Orange – Iron
• Red – Aluminium
• Black – Heavy organics
• Yellow – Lead