voltage leak in tank

Last night I installed a new NYOS Quantum 120 protien skimmer in my tank. Everything seemed to be working fine, but when I touched the water today, I got an electric shock! I live in the UK and used the EU-to-UK adapter included (see photo). I tried reversing the EU plug and it stopped...

Hi! So every time I put a part of my hand/finger in the tank with a cut on it, example a cuticle cut on my finger I feel a shock. At first I was like oh its probably just because of the salt getting into my cut. But, after about another week I was still getting this shock again because I...