T1KARMANN;3948017; said:HMA looks like a RO unit but no waste water it takes out the same as tap water conditioner
http://collinswaterproducts.co.uk/p...d=183&osCsid=4f70e74ca0bd30b35ceeecae7d0f8c1b
Thanks, might have to look for a local equivalent, would be cheaper than water conditioner in the long run I'd imagine.
Any particular reason for running UV on the tank? what sort of strength, like for killing green algae or strong enough to kill parasites? I guess its good preventitive medicine if you're keeping sensitive fish, but with the cost of the bulbs (here anyway, not sure about in the UK) it must be expensive!!