Originally Posted by Aztec Reef
like i said it depends of size of tank. i wouln't advise to do this in a 29g. that was just my experience with my tank but if you're are adding this 6lbs of lr to a 125g. i don't see how it can cause a problem
Alot of LFS' like to call rock "cured" so they can put a higher price on it. 6lbs of uncured rock in a 210 will cause spikes. I am not trying to challange what you have done or what can be done. I have seen these issues many times on here where someone buys supposed to be cured rock, adds it to their tank, then has huge spikes. It is always best to place new rock in a conainer and test for ammonia. There is no harm in prevention, but disaster can strike without it. :happyfish