Here's some pics of the corals. This first one was brown when i received it. it has since turned a lighter brown with a touch of purple on the tips but that is as good as it has become.
This one used to be a nice right green but has since become more of a duller yellowy green.
This frag is about twice as big as when i received it. The tips have turned a bit pink but the rest has stayed beige.
here is the previously red mill that is now more peach coloured.
A previously nice green slimer with blue tips that is now going completely brown.
This frag has grown somewhat from when I received it but colour has not changed at all in the last 5 or 6 months. The tips are a nice green but the rest is brown.
This one has just faded from where it was white with blue tips. The blue is much more faded now.
Another thing to note is polyp extension has not been as good as it used to be either.
So I hope the stray voltage is the answer. Will see how things do once I address that.