Which trowel to use for Schluter Ditra?

[PJPro]

Thanks for the advice but I've gone with 4.5x4.5mm notched trowel. Hopefully, this will be OK.

Any thoughts on the trowel for the wall tiles guys?

 

[PJPro]

I've put down the Ditra using Mapei Kerquick using the 4.5x4.5mm trowel. I mixed twice the amount of addy I needed. I reckon I used about 2.5kg per m2.