I bought a 800ltr pillar water tank it is very thick gauge plastic very solid it is up and running and I am pleased with it and the service I had when faced with a problem. However I do find strange that the hole on top of the tank is not only off centre but undersized considering that to fit if needed the hose connection point one must put ones arm inside the tank to attach the back nut and washer as this really restricts the available range for positioning the hose I am a big lad and have long arms and not particularly muscly and I could not easily reach the sides . Luckily I did not in the end have to use the hose but this would have been a problem for me and it seems that to have the hole central in the top and just a little wider would have made an awkward task much simpler . But it is a great tank which takes up little space but has a large capacity and looks reasonably smart in situ. I ordered a nice brass tap instead of using the supplied plastic one and this looks and feels like quality . Also the tank although large fits through normal doorways so this is obviously a very good thing for accessibility issues. 9/10 .