Data validation with multiple rules

Hi,
I can't seem to figure out how to make a custom data validation work for multiple rules... Hoping you lovely people could help me figure out where I'm going wrong?!

I'm creating a spreadsheet for data input and need to make sure that the numbers going in a range of cells (B6-B36) are only whole numbers equal to, or greater than, zero (no negative numbers) with a maximum of 1 decimal point.

I've tried breaking down the rules and come up with this: =AND(ROUND(B6,1),MOD(B6,1)=0,B6>0)
But it didn't work...


Your help is much appreciated!!