Increase size of cold water storage tank

[Bankrobber]

Hi
In want to increase the size of my cold water storage tank as it occaionally runs dry due to my shower pump. Can I just add an additional tank purely to feed the cold water to the shower pump, fed by teeing of the mains water pipe, additional ball cock etc or can I add an additional tank and join both tanks together at the bottom? Which is best?

 

[doitall]

Best to link the two together.

You have to take the cold mains to the ballvalve in the first tank, and the outlets in the second tank, with a link between the two tanks.

 

[Bankrobber]

OK thanks for that.

So I would be best repacing the original tank with a bigger one rather than adding a second tank?

I was trying to find an easier option!

 

[doitall]

OK thanks for that.

So I would be best repacing the original tank with a bigger one rather than adding a second tank?

I was trying to find an easier option!

No you can link the two together, you need a flow through the tanks otherwise one will stagnate