looks like some kind of still.....your love of tatties gave it away......is it to make potcheen? :

i didnt think it was wfp related as it would be too obvious..........wouldnt have taken a lot to figure it out....i know people think window cleaners are dummies, but :
....hence i understood you were being obtuse
...and were trying to test us.....and i took that the potatoes reference in your posts was a thinly veiled clue to the question.....but i was way out wasnt i?...och well.....just a newbie. 
You lost me, again, perhaps Im tired.
Good idea. But i think your making things far more compicated than they need be..
Just have the water run directly into the tank with a filter for large debris and then pump the water into the van tank with a DI tank filtering on the way out. You can do away with fancy tanks and pipe work for an easier soultion. 
Fancy tanks?
It hasnt got bells on it, its just a water-butt.
Oh well, just trying, thats all, thought it might be a good idea, oh well, back to the drawing board.
Matty, is that you in your fish tank?
In my AV? Yes.
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Was taken on the same dive as the Lion-Fish pic above.
Matt
Matty what hair products do you use, as your hair look perfectly combed.
You should send that to tigi 
Yea I know bizaree that aint it Ian, 'ere I was up in your neck of the woods today, St Neots, Great Gransden, Biggleswade.