Plenum problem??

[sacramentofish]

What if I added an inch or so of aragonit sand on top of the current cc? I don't think I have enough cc to make a dsb, so I would loose the denitrification of the substrate. right??

Also, I would have to remove all the LR too get to the plenum plate.. I am getting really confused..

Take a look at my pics in the gallery.. I have a sick xenia that is only half open..

 

[Salt4Us]

In your gallery, is the Xenia near the power head? If so, they don't really like to be blown on directly, that could be what is making it not open.