Thanks all for your help. Inflatable paddling pool! I would never thought of that

Plasterers bucket may be the way to go if I do more but only have this one to do at the moment. Nice one Griff on the plastic bottles, I would have just filled the whole thing

I may try and put a few water heaters in there too, only as I have some here. Heaters are for my anodising setup, £700 in and still ain't cracked that either

Well I think tomorrow is the day and will take some before and after shots.
Cheers lads, you never let me down