OK,
if you are setting one up then it would be ok.

And if you are getting your plants from a Local fish store. ( a real one not like petsmart)
then it will have some good starter bacteria to get your cycle started.
Now the plants from places like petsmart that are in tubes with hydrogell
do not have the bacteria as much as ones that are in a tank when you buy them.

The only positive thing about getting the plants that are in a tube is that they are 100% snail free.
But I like having snails they help keep things clean.
and when they start to get out of control I just thin out the herd a bit.

BTW with only 5 gallons I would stick with a max of two ACF's and that will be a bit
cramped when they get to adult size.

also FYI ACF are banned in a lot of states.
if you get them keep them until they pass do not release them.