I have a 380 set up as fo. I have had it running for 6 months and now I am having water problems. Last week I had a nitrite and ammonia spike I did a 50% change and it helped but now it is on the rise. I have a lion, salfin,sohal,yellow tang, two puffers, tusk, and zebra eel. I have tried to cut down eating I have added to to the cleanup crew and still no help. I have a large reef life skimmer, I am running carbon and have a uv starilizer. Please let me know what else I can do.