Dry rock

[Mr. D]

Can dry rock cause an ammonia spike?

I know live rock can if added too much at once but what about dry?

 

[jjamontan]

Dry rock should not have anything on it that's why it is called dry rock

 

[jjamontan]

Ammonia comes from something decaying in the tank.

 

[EriksFish315]

You should be fine adding dry rock.

 

[austinsdad]

Dry rock can indeed add ammonia sometimes. Think about it. When its added to water it can re-start a decaying process if stuff is still on it. First, brush it off real good under water with a stiff brush. Test the water anyway after adding it. Never assume that because it's dry, there'll be nothing to decay further.

 

[Mr. D]

Okay, thanks.. I was just told not to add it b/c it slows the cycle time and can cause spikes out of no where.... I guess it makes sense now... Thanks for the help

 

[austinsdad]

So, you're cycling now? How long and what is the ammonia reading at now?

 

[Mr. D]

No, but I am trying to piece together my costs as and try to get it right the 1st time w/o problems... My Lfs suggested against it but during my research it seemed recommended that I use mostly dry