Hi, I used 1 gallon demijohns (as used in wine making) in salt-water capacitor I built some time ago. I measured them and found they were about 2.5nF each. Gavin Tesla List wrote: > Original Poster: Fucian@aol.com > > dont use plastic bottles!!!!!i tried and as soon as i turned it on they > failed!!!!anyways they are about 2.8nf i think > > matt