I have 5 small White Calvus in my 29gal with a pair of BN plecos all is fine for now but i will have to move these once they get bigger i would only do a mated pair in a 29gal but if there small like mine you will have a few years to decide..
As for the Julie's a pair will be fine in the 29gal if your going to keep the T-Barbs add a couple more and they will be dither fish for the Julie's i wouldn't keep loaches in such a small setup with these two species..
As for the Julie's a pair will be fine in the 29gal if your going to keep the T-Barbs add a couple more and they will be dither fish for the Julie's i wouldn't keep loaches in such a small setup with these two species..