Eheim classic 350 Blue Coarse Foam Filter Pads, 2 Pack Heat Mat These beads remain smooth even

These beads remain smooth even under a microscope

Increased growth

Copper Proteinate

UVA and UVB output significantly

Eheim classic 350 Blue Coarse Foam Filter Pads, 2 Pack Heat Mat These beads remain smooth evenFine and coarse filter pads for mechanical and biological filtration The porous material becomes evenly soaked with water and traps large and small dirt particles. After a short start up period purification bacteria, which provide intensive biological decomposition of harmful substances, colonise the specially structured foam. The fine and coarse filter pads are reusable many times over. To clean them simply rinse and squeeze out, so that the bacteria