if you need to drop nitrite and ammmonia levels quickly best way is alot of prime it will knock it out temp. however get some buckets 1 fish per bucket and change their water every day til tank is stable by taking the advice above as the saying goes only bad things happen quickly is saltwater so paitence also seeing how you just joined i did about amonth ago these folks know what they are talking about the people at the LFS's are jack@#%( so keep asking questions see if someone nearby will trade your fish for rock grab some biospira and give it a few days