Adding more fish

[dgee]

How long should you wait between adding fish to a new tank with all water parameters good?
I added one fish to a new 100 cycled set up that already had only one other fish and a shrimp in residence and want to take it slow and easy - but how slow?
Thanks

 

[lovecraft]

Most of the posts I've seen are about 1 a month. I'm new, but it's what I've read here.

 

[perfectdark]

Well as long as your water perameters are good. I have added a second fish to my tank as little as 2 weeks after my first. (29 gal biocube) I added the 4th and last a month after that. This is my first SW tank but not my first tank in general. Everything seems to be okay...

 

[lexluethar]

I would agree, as long as your parameters are okay. You don't want to add a lot of fish at once because then your ammonia will spike, setting off another cycle. You need to add them slowly so that the beneficial bacteria can populate to adjust to the larger bio load.
You should also consider putting your fish in a QT before adding to your main tank. People do this to avoid Ick and other parasite breakouts. The idea there being that once you buy the fish you can aclimate it more to your water parameters, and also keep an eye out for any illnesses. Because once you add a sick fish to your tank, all your fish will become ill.