What does 'fluid' in menier refer to? i can make 'click/crack' sound in my ear everytime and it sound like fluid/water...

Inner ear fluid: Your cochlea (hearing organ) has microscopic fluid filled spaces. The excess fluid that is referred to in meniere's is excess fluid in these microscopic spaces. It is a result of improper salt ion transport. Not the same as the fluid you get behind your ear drum.

TMJ Sounds?: The menier's syndrome is not well known to me so i can not speak on that. However the fluid that the inner ear utilizes to control balance is no where near the area were you could hear sounds produced by it. I would more likely assume that you are hearing crepitus from your temporomandibular joint. Tmj pain and noises are a very common problem for people and can present with varying symptoms.