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When I bought my first canister filter, an Eheim 250, in the 1980’s I took the design for granted. It was housed in a home made cabinet that had a suitable hole in the back for the hoses. The angled outlet pipe and ability to angle the inlet on the Eheim made it easy to position the filter to...
Looking back, none of the plastic media I’ve used in the past has discoloured much if at all. In fact when I used ceramic media many years ago any obvious discolouration largely washed off that as well.
I took out the Ziss media that was in the Biomaster (along with the Siporax) and replaced...
You might assume that but if that was the case why is the aquarium not suffering high nitrite or ammonia levels?
I strongly suspect the brown stuff is just detritus.
Edit: Just to add, when the Biomaster had plastic media in it as well at the same time, it was not covered in brown detritus. I...
I think the reason in this case is that I have a foam “pre filter” on the inlet pipe for the Eheim. I believe that some of the flow on the Biomaster bypasses its internal pre filter.
This could be checked I suppose by doing the same on the Biomaster inlet.
I don’t think it’s specifically Eheim equipment, but rather the design. On an Eheim Classic, or an ADA Superjet (and the copies), the water can’t really bypass the media in the canister. It has to flow through it. On various other designs the water has other routes it can take. I found this...
I’ve just done some maintenance so took a couple of pictures. The Siporax is still pretty clean in the Eheim. The stuff in the Biomaster has been in there a lot longer but I remember being disappointed at how quickly it got dirty. I’ll monitor how things go in the Eheim as time goes by.
Thanks for the heads up. Luckily I have several spare canisters in the loft should I need one. I have actually been thinking about replacing my Biomaster 350 with an Ehiem Classic 600 at some point. Far less to go wrong.
As a point of interest I found a skimmer either didn’t work or was a danger to shrimps. As a result I followed advice on here and introduced air diffusers in both of my Nano’s and it’s cured the problem. I make my own Limewood diffusers. They produce nice fine bubbles for a couple of months...
When I put some Siporax in my Biomaster 350 they went from white to brown in maybe six months. I put some in my Eheim Classic about six months ago and they are still pretty white. Due to the design, bypass on the Eheim isn’t really possible. On any other canister I’ve had, including the...
I took a screen shot of the relevant part when I first saw it but didn’t book mark it. I’ve found it though.
https://www.sera.de/en/service/info/how-does-sera-siporax-professional-work-in-aquarium-filter/
I only started using the stuff as it came with a Sera canister filter I bought some years...
I don’t take much notice of marketing when it comes to Aquarium Technology, including media etc. I came across this recently though, I wonder if a copy of this university study is available? Not for me I might add, as I doubt I’d understand it! :D
I use lime wood air diffusers in both of my Nano’s. I originally started doing this to stop surface film and it works really well. Before that I was using an Oxydator but I’m not sure it was needed. I read they were quite good for shrimp though.
I have 6 Sterbai a bit over 2” and 2 Pandas that...
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