I think it is time for me to give back to the community!!
I have found an easy fix for Fluval Spec Tanks' common issue... Strong Current.
There are many ways I saw on the forum including putting plants in front of it, tie a sponge on it, etc. Those are definitely good ways, but I'd like to show how I do it as well, just as another option!
I have found this Elite Mini Replacement Filter Foam. It is quite cheap, I think $3 for 2.
The good thing about it is that it has a small hole in it, as shown below...
Another pick with my finger in it to show where the hole is...
And the filter outlet fit snugly into the hole, here is a pic of how it is. The head is pointing down on purpose.
With that I can actually turn the current to max, and the betta is still very comfortable with it. The current becomes so mild that my betta can feel it only when she wants to!
Finally just a pic of my whole tank setup! I think it still looks quite clean with the current fix!
I hope this helps!! Just wanna give back to the community a bit when I can!