Would hooking this up in-line from the filter be a good idea?
http://www.amazon.com/Clearwave-Ele...HR9E/ref=sr_1_1?ie=UTF8&qid=1312564219&sr=8-1
the reviews seem to be good... can it do any harm?
http://www.amazon.com/Clearwave-Ele...HR9E/ref=sr_1_1?ie=UTF8&qid=1312564219&sr=8-1
the reviews seem to be good... can it do any harm?