Chris Moss
Member
I installed a tank many year ago on a Builders sand base. Over the years the sand has moved away at the back and the tank is tilted backwards. I need to empty the tank so that I can move it off the base, refill the sand and improve the wooden surround. Or should I go for concrete?
My problem is how to remove all the water to make the tank light enough to move, without splitting it. Yes it is plastic. There would be say 400 litres in it when it is drained out at the tank tap.
Concrete is best and not that expensive if you do it yourself. It isn't hard.
To empty, syphon it. Just attach a hose to a length of PVC pipe and fill the hose and pipe with water while pushing the pipe down onto the tank's floor to prevent leakage. Then just drop the end of the hose to a lower level. You will need a large diameter hose, if you don't have one, buy some 19 mm poly pipe. It costs about $7 for 20 metres or so. To prevent the poly kinking, have the length of PVC pipe inside the tank, that way the poly will curve over the top of the tank's top inlet.
Tanks should be fitted with a low set dedicated drain valve and you will be able to fit one when the tank is empty.
