API® xP FILSTAR S aka Rena XP1
1 Tray 
If stock foam is used, remove fine foam from top and place on top of lower foam filter.
The tray holds about 268 cu in. If 1/3 of the canister is devoted to Biohome media it would require about:
| Media | Amount Required |
| Standard, Plus, Mini, Ultimate, Ultimate Marine | 1 kg |
| SuperBioGravel | 1.5 kgs |
API® xP FILSTAR M aka Rena XP2
2 Trays
If stock foam is used, remove fine foam from top and place on top of lower foam filters.
1 Tray holds about 192 cu in. If the upper is filled with Biohome, it would require:
| Media | Amount Required |
| Standard, Plus, Mini, Ultimate, Ultimate Marine | 2 kgs |
| SuperBioGravel | 3 kgs |
API® xP FILSTAR L aka Rena XP3
3 Trays 
If stock foam is used, remove fine foam from top and place on top of lower foam filters.
1 Tray holds about 183 cu in. If two trays are filled with Biohome, it would require:
| Media | Amount Required |
| Standard, Plus, Mini, Ultimate, Ultimate Marine | 4 kgs |
| SuperBioGravel | 6 kgs |
API® xP FILSTAR XL
4 Trays
If stock foam is used, remove fine foam from top and place on top of lower foam filters.
A report from a customer of Ultimate and Mini media, Benjamin Flemming, provided detailed information.
“Just thought I would let you know that I have put the media into the API XP-XL. I used all of the three kg and then added the remaining 1 kg I had from my last order, plus perhaps another 1/2 kg or so of Fluval media that I had. I filled three of the four media trays full of media and the bottom one I filled with coarse and medium foam media. This means that each of the three trays I filled uses about 1.5 kgs. For a total of about 4.5 kgs (9-10 pounds). “
Amount required:
| Media | Amount Required |
| Standard, Plus, Mini, Ultimate, Ultimate Marine | 4.5 kgs |
| SuperBioGravel | 6.5 kgs |