[nathankaye]

Look what ive just found in my local morrisons!!  Yep its tedious puncturing holes in them but considering some money im saving......i think i can do so with a smile on my face 

[NWH]

Plastic balls in a tank will do nothing to stop the force of 1/2 a ton upwards lol,it's a bit like trying to push custard up hill with a fork it's a waste of time.