I bought a 250ltr flat tank and 3 210ltr rain water Butts from B&Q
Now the first time I filled my Tank, I had to go and stop the transfer pump before my tank over flowed, when I checked my water butt it still contained about 25ltrs of water, so I am thinking its not 250ltrs but 175ltrs? I contacted my supplier who was more than helpfull but he could not explain my findings, so he gave me the number of the manufacturers whom I phoned today, the secetary was helpfull and told me that there 175ltr tanks do not contain a baffle, (mine does) she told me she would get the director to call me back.
This afternoon the director called me and explained that they are worked out and made with a computer program and told me a few things about my tank, he come to the conclution that the water Butts from B&Q may well be more than 210ltr Tanks?
My question is, has anyone actually measured these rain water Butts? Mine are all full at the moment, so I can't test it.