Currently I'm at 3 cories 1 betta 1 bamboo shrimp.
I added an airstone to my filter to accommodate the shrimp.
My levels are all at zero and I planned to upgrade the tank's size later.
The corys seem to be doing fine, eating well chasing each other around the tank at 3.
The levels have not spiked nor unbalanced.
The shrimp molted, which is normal for a tank change.
The only strange behavior I have seen out of anyone is with the shrimp who is active only at night. I feel this has something to do with how he acted naturally
I supplement his diet by crushing shrimp pellets and adding them to the water column.
I actually went to two of my lfs asking about them, and the "shrimp lady" (not her real title she just only keeps shrimps loves her bamboos and vampires lol) recommended the no tube+airstone+spongefilter to keep the current going. Its enough to push my floating plants around and my driftwood sits right by the output at the top of my water making it easy for him to filter feed.(though I havnt seen him fanning all over the place yet he doesnt pick at the ground so ether he isn't eating at all or is only eating at night when I see him move) He is a reddish brown with a dark red stripe or an orange lobstery color at all times. It's become clear to me he doesnt like the light at all. (hence him only traveling around only at night)
As for a HoB filter, it might disrupt the ecosystem in the tank currently.
As for Julii vs Pandas there are a few reasons I decided on Julii's over Pandas
One of the major ones is the sensitivities of the pandas. Julii's seem far more hardy and fit in my tanks average temperature much better (75-77F).