Miracle Mud in sump...rubber or plastic container?

[joe-ejs]

Hello.

I am going to add some Miracle Mud to my sump as I start up a refugium. I am going to put the MM into 2 containers that fit into the bottom of the sump in the refugium space so I can swap out 1/2 every 6 months or so. I am debating between plastic food container or a RubberMain BPA free rubber container. I want to use the rubber containers as they are the perfect size i need. I assume rubber is ok since our powerheads have rubber cords but wanted to check with others if anyone is using rubber containers on their sump.

any advice is appreciated.

 

[Silly clownfish]

I think the Rubbermaid ones are fine

 

[r2odie]

Just checking this. Did you add the mm in the rubber trays? What are your thoughts so far?