During my too enthusiastic pruning of pond plants before the winter I "pruned" the LV cable that runs to my mister unit. (That's a device which generates a mist effect as a decorative feature) I have to repair the cable as I cannot get into the mister unit to do a complete rewire. It is factory sealed with no means of access. The remade joint will be under water, though I can get it onto dry land to do the repair. I can purchase an underwater plug/socket for about £15, but I wondered, as it is low voltage, if I did a soldered repair, & taped up the joint (which I realise would not be waterproof) this would suffice? Your advice & suggestions for alternative would be appreciated.