Reef Ocotpus calcium reactor media capacity?

[jlts21]

I have looked on coralvue’s site, downloaded the manual/parts diagram and searched google with no luck. Does anybody know the media capacity for the Reef Octopus SRO CR5000D calcium reactor? I’m getting ready to order some media and not sure how much I need (don’t want to run out too soon) and also don’t want to overfill it.

 

[jlts21]

I did find that they recommend filling each chamber 3/4 full, but how much is that in actual media? My plan is to go with the DeStaCo or Triton CarX Media