trying to find a decent wetting agent to apply esscence, i was going to order some 'plantmagic bio-wetter' but unfortunatley i cant afford to pay the extortionate charge of £15 bloody quid delivery

thats £25 in total
can anyone recomend something i could use that wont cost me like £25 and i could get at my garden center

or if any one has any links please pm me
cheers guys