I wanted to ask this question for sometime. Ive been looking at getting one installed, based on the price its around Â£150 or so. My question is how easy is it to install? and does HMA/RO filters work like a normal say water filter you would use in a kitchen? I was told for RO you need to have a canister or unit to store the water, whereas HMA acts like a water purifier and you can simply turn the tap on and it filters it. Also the other question is, if I was to move, how will this affect the removal of such equipment? Which is more beneficial? HMA or RO? I have discus, but keep them in normal treated tap water and in the long run I know its better for them to be in better water conditions. Please help me weigh up the pros & Cons of this. *If this thread is in the wrong section please feel free to move it moderators.