Info for Saltypig. Filter was delivered yesterday and hasn't come with filter media.
they are sold without media, unless the advert states otherwise. but, reasonable costs (£35, or so) kits are available. they are even cheaper off of Ebay.(usually)
there is cheaper (then eheim) media out there. but, IME for these filters, you are best with the makers product. but its not all bad. if you by the Eheim. you will not need to replace anything, except the white pads, for many many years.
I was informed by the Eheim main import agent that the media is best changed every 12 months. The guy said that the micro pores get clogged up and they end up not being able to house the bacteria. Boiling the media does nothing. How true that is god only knows.. Im not entirely happy at the thought of doing this. I suppose a way around it is to keep a diary of how the levels are and do regular water changes. When the tank water does start to become unstable then change 50% of the media, or change a basket every 6 months. Im a bit lost .
well, nobody from Eheim, is prepared to say that. not in emails, or conversations with me. though both substrate pro and substrate do produce some sintered material when washed (more so substrate). and, over 5 years now, the tubs have needed topped up. I've probably used 1/4 litre to do so. if the stuff only lasts 1 year. the vast majority of Ehiem users, are using, the unusable. and few suggest problems with their tanks of filters.
like you, i am "uncomfortable" with the comment. sounds like sales speak. but i will wait for the reply to my new questions. as for Eheim instructions? they only state the white filter pads need replacing, during any cleaning cycle.