I'm a cheapskate, (look at my set-up I posted earlier :grin: ). It would benefit from a pump and I don't want to pay £100+ for a March May from RS catalogue. Any cheap alternatives anyone has rigged up? I was thinking of salvage from a washing machine :sick: . I've tried a cheapo drill pump and that leaked like buggery. Something that would run from a 12V car battery would be great, had considered windscreen washer pump but don't think it would take the heat.