Refugium Plenum

[pk-sd]

Has anyone built a plenum in the refugium part of the sump. What components are needed to do this ? Is it worth the trouble?

[colindoug3]

Have not done this. I read about plenums a while back and it seems one of the contributing factors to their success was pressure. You would need a deep sump, the weight of lots of sand, or the combination. I remember not too long ago here on sdreefs people started taking sand out of their fuges and got better results. Curious to what you find out.

[dhuynh]

I don't think you will even need a plenum PK. Just put in a DSB and you should be able to reap the same benefits.