My Fukien tea tree was severely infested with aphids and spider mites. But after repotting and constantly removing them as I see them with soil with good drainage(tinyurl.com/fukteatree), now they are almost gone. Once a week I see a bunch of small white insects sitting under the sticky leaf.
Today when I was watering the tree. I see very tiny insects coming up from the soil.
They were of 2 types. One white and thin, and the other was black with a round bottom.
Both were so tiny that I couldn't take pictures of them.

I want to know how to treat them?
Any help will be greatly appreciated.

maybe springtails.
Buts it's hard to tell without a picture.

Check for yourself:
www.planetnatural.com/pest-problem-solve.../springtail-control/

www.pestwiki.com/springtails-facts-identification-control/

The other bugs may be cubby gnats. Cause for both is keeping the soil too wet.

Hi Auk,

Thank for your reply.
I tried my best to take pictures and videos of the bugs.
If you are able to see them please help with the treatment.
video link below
photos.app.goo.gl/d1udio7MYBcq1z126
-Naba

Same reply as to another topic a moment ago:

Water a bit less, let the soil dry between waterings (but do not let it dry out).

Also, remove the pebbles from your mallsai so you can actually see the soil.