OASE Filtoclear 3000, 6000, 11000, 15000 fine red sponge foam filter replacement

Replacement fine red sponge / foam suitable for OASE filtoclear, models 3000, 6000, 11000 and 15000 models. OASE filtoclear 3000 requires 2 x coarse blue sponges and 1 x fine red sponges OASE filtoclear 6000 requires 3 x coarse blue sponges and 2 x fine red sponges OASE filtoclear 11000 requires 4 x coarse blue sponges and 3 x fine red sponges OASE filtoclear 15000 requires 5 x coarse blue sponges and 4 x fine red sponges These are just the fine red sponges for the above models, please add how many you need of these and then purchase the number of blue sponges you require