u/Affectionate_Aide566

What’s the best way to use fast-setting concrete?

I’m planning to install a pool fence and want to use fast-set concrete so I don’t have to mix in a wheelbarrow or brace the posts all day.

The fastcrete instructions say to pour 2L of water into the hole first, then add one 20kg bag. If my hole (600mm deep × 200mm diameter) needs two bags, should I pour all 4L of water in first and then add the concrete, or add water and concrete in stages and mix it with a stick? What’s the best way to prevent air pockets when setting the concrete?

Also, I’ve seen people say to avoid using fast-set concrete for aluminium posts, but most YouTube videos show it being used for pool or aluminium fencing. What’s the general consensus on this?