I have a 30g and I have a 2inch honey groumie and I wanna know if I add a blue Groumie and 2dwarf groumies and 5 little coridoras will that be a good set up
I wouldn't do the blue or the dwarves- you could probably get away with more hony gouramis though- they are pretty mild so far as gouramis go. Or, keep just the one and get a little school of tetras or harlies.
The 5 cories are no problem. Blue gouramis can get too big for that tank. Honeys are actually dwarf gouramis. Some of them can be aggressive other not so much. If you tank is heavily planted then adding a couple more dwarves should not be a problem. But if you have a more open tank then I would suggest doing as Ash mentioned an getting a large school of fish to ofset the 1 gourami you have now.