125 Gallon question

[salth2osmoker]

Hi I have a 125 gallon tank, its been set up for about a month and a half now but all it has in it is 2 clown fish so far I was about to add 100lbs of live rock. Anyway I was wondering how much water I could take out of my tank without my tank crashing or going into re-cycle and killing my fish.. Thank you

 

[redman1221]

Originally Posted by salth2osmoker
http:///forum/post/2971725
Hi I have a 125 gallon tank, its been set up for about a month and a half now but all it has in it is 2 clown fish so far I was about to add 100lbs of live rock. Anyway I was wondering how much water I could take out of my tank without my tank crashing or going into re-cycle and killing my fish.. Thank you
Is your tank drilled or not drilled?

 

[small triggers]

do you have any rock in there right now? and can you get fully cured rock to add?

 

[eric b 125]

if the rock you're adding isn't fully cured, or has any die-off, then adding the rock will start a cycle. if you have a good bit of LR in there already, you could add base rock without a cycle

 

[crypt keeper]

set up a 15 gallon qt. Use some rock and fill it up with water you have in your tank now. Get a small filter and no sand. Then add rock. You will have some die off. It will cause some spikes. Theyw ont be big but why risk it? Then in two weeks re add your fish