Fluval Foam pads capture large particles and debris for effective mechanical filtration the crucial first stage in the filtration process.
Custom fit to prevent bypass they have a pore size that allows efficient water flow with less clogging for long-lasting filtration. For freshwater marine or reptile environments. For U series filter model: U4
Trap fine debris, improves water quality and removes odour
Specially shaped to fit Fluval U4 filter
The Poly/Carbon filter cartridge features two sides: the Polyester filter pad side filters out fine debris and contaminants. The Carbon side filters out harmful liquid substances, colorants and odours. -Replace every 2 to 4 weeks or when flow rate is noticeably reduced. -Replace one at a time, never replace both at the same time.
Genuine Fluval replacement cartridges. Using anything other than genuine Fluval filter pads can restrict the flow in your filter which can cause catastrophic failure that will not be covered under warranty.