I'd say you're full up. When you move to your larger thank and as all your inhabitants grow, you'll find you're pretty much maxed out.

Like you mentioned earlier a bigger/better skimmer/filtration system will help you keep everything in line from now until later.

I wouldn't add anything unless it was smaller fish, or fish that won't compete for space, food, or a home/hiding place. I'd be very wary of adding any smaller fish.

Don't think i am going to add any more fish after adding the sohal tang as the last one which already gave me enough stress. But i want to add more corals :-)

Can i? I probably going to remove 3 chromis to reduce the bioload

I'm sorry Tai but your hippo tang alone is NOT going to be happy in your 400g tank. I dont know how he manages with all the other giant fish you have?? Seriously that has got to be some record for a hippo tang!! 3 feet?!! You should call national geographic! :surprise:

Sorry my bad with unit notation, sorry for missing one more ' at the end there.

Nice catch Kien. :-). I actually feed them with some reefroids stuff but they can't seem to grow that fast

I agree. Some of those fish are going to get large. A 6" fish poops more than three 2" fish.