I recently got a fluval 305, and thats what i got, plus the sponge. I havn't put the carbon in though. Thats only needed when removing medication, ect from the water. So i replaced them with some spare sponge i had.
The bottom tray i have sponge, middle tray one sponge and one biomax, top tray both biomax.
In my 405 I took out the carbon (4 sections). Replaced the top 2 with biomax and the bottom two with Seachem Purigen - works well for me.I got my new Fluval 305, whats the best layout for the supplied filter medium please.
I have the following media.....3 sachets of fluval carbon and 3 sachets of biomax
Thanks