High nitrate only!

[daniella3d]

It all depends on the type of liverock. If it is dense non porous liverock, it will never do the job right. I only have about 45 lbs of Totoka liverock in my 75 gallons but since it is so porous, that's all it takes.

YOur liverock must be very porous for it to be efficient as denitrification.

Originally Posted by fresh

With almost 20 lbs of LR in a 14 gal tank, I would think that this process should be optimal.

Anyhow, with a couple more water changes, I hope the nitrates are gone.