Nitrites, How much is too much for adding LR

[cherijon]

My 40 gal tank is cycling, ammonia spike has come and gone and I want to add LR. I've been told that it shouldn't be a problem as long as the nitrites aren't "too high". Any rule of thunb on "too high?" There are no fish in the system. I'm looking to add a 2-4 lbs (cured) at a time each week or so until I have all I want. I know I may get another spike but am willing to wait it out before adding fish. Any help would be, well... helpful. Thanks

 

[cherijon]

sorry for the multiple posts. I didn't get a post submitted message.

 

[reefrunner69]

You can add LR at any time, it will actually accelerate the cycle. Personally, I would try to add more than 4-6 lbs per week, maybe instead of shooting for a weight, look at one or two med sized pieces per week. Smaller rocks trap detritus and cause algae issues, you will have better flow through med-large rocks which will alleviate some of the settling, it's also easier to build your aquascaping, IMO.