You can, but the thicker base wicks slowly through a tight coil and the strength is low for mouth to lung use. The standard 50/50 salts are the better fit there.
Standard salts run at 50% VG and will not keep up with a big airflow tank. The 70/30 blend fixes that by thickening the base while keeping the nicotine in salt form.
The result is a lot of vapour with none of the scratch you would expect from freebase at the same level. Keep the strength low, since a sub ohm device moves far more liquid per puff than a pod does. Every bottle is £2.99 or any 5 for £10, and each one is made in the UK.