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Oase Biomaster 250 Filter Media Quants

Gripen40

Seedling
Joined
14 Jun 2021
Messages
2
Location
Chester
Good morning,

I'm looking to upgrade my Dennerle internal filter for a OASE Biomaster 250 and have seen that the included media is not really the best media to use. Looking at ordering online but unsure of what quantity of media to order, my assumption is I will need to fill 2 of the internal trays with Seachem Matrix media.

Does each tray hold 1litre or less?
 

hypnogogia

Member
Joined
6 Apr 2017
Messages
669
Location
Oxfordshire
Many people on here just use the foams that it comes with. If you want to use specialist Biomedia, I'd fill all trays except the top one with it, but make sure it's coarse media to maintain flow rate. Top tray with a bit of fleece and then some Purigen. Mechanical filtration will be taken care of my the pre filters. I've run mine like this and only clean there pre-filter about once every 4 weeks and the main filter hasn't been opened for about 3 months now. Flow rate is great.
 

erwin123

Member
Joined
4 Mar 2021
Messages
256
Location
Singapore
After reading more in this forum, I read that you are not even supposed to clean/rinse foams with fish tank water unless foam is like totally blocked? But when I squeeze the foams and all the brown gunk comes out, it makes me want to clean them some more! :)

Whereas the 'commercial' biofilter media (I have small amounts of 3DM and matrix that are over 10 years old, so frankly the amortised cost isn't that large), I don't really clean them during my filter cleaning process as they generally look 'clean'.
 

dw1305

Expert
UKAPS Team
Joined
7 Apr 2008
Messages
12,478
Location
nr Bath
Hi all,
I read that you are not even supposed to clean/rinse foams with fish tank water unless foam is like totally blocked? But when I squeeze the foams and all the brown gunk comes out, it makes me want to clean them some more!
I give mine a good clean, in a planted tank you aren't ever entirely on the <"filter microbial assemblage for nitrification">. I want all my filter media to remain aerobic and bathed in oxygen rich water, so <"thick, sticky biofilms are out for me">.

If you want an option that will never clog, or retain more than an optimal depth of biofilm, the floating cell media "Kaldnes (K1)" <"was designed with that in mind">.

cheers Darrel
 

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