UV "Water Purifier" Cleaner things

Do the UV water purifiers really help much? I've had some problems with my tank and the fish getting ich lately and was thinking maybe one of these units could help... I have a 14 gallon bio cube reef tank and think maybe water flow might be an issue. I have no interest in setting up a separate hospital tank as I've not the room nor the cash to do so.
NOTE: I do have a power head and keep a pretty close eye on the water and salinity.


NOTE: I am a fairly new hobbyist of just 4 months.
:-/:

 

It worked for me

 

I'm looking at geting a UV.
There is so many diff. brands out there ,
Could any one tell me some good ones to look at ?
also maybe a good power head to run it ?
I have a 46gal Bowfront. thanks!

 

waste of money imo. adequate habitat (water quality, diet, tank mates and swimming space) are all key factors in keeping ich in checnk. remember a heathy fish should be able to combat ich naturally with its own immune system easily.

 

Thread necromancer!!!!!!

 

hahaha snap! didnt realise....

 

Lol