cole wrote:

Have this lilly pilly tree and all the new growth has kinda "bubbles", you
know like the leaf has hundreds and thousands in it! (sorry I have no other
way to describe it). There's also some ants tending it - going up and down
the stem to do something... are they causing the problem?

Nope, probably tending whatever is. An aphid or something. Not really a
problem. The insect will probably attract small insectivous birds in
time.