There was some talk of Hillstream loaches recently, perhaps 2 or 3 (they do not grow from the size you get them, so be careful not to get them too small) and make it a riverstream enviroment (powerhead drawing current from the opposite side of the tank) remove the heater since hillstreams like temps down to 65F, and put some rocks in to give them shelter from the current if they want.. and use riverbed stones..
If you keep the current lower in the tank, (bottom half is where the powerhead and intake are) then you could put a couple mountain minnows in there aswell (white clouds)
(set the heater to 65F if you have them in there, tho it's doubtful in a house it will get that low)
I think it would be a neat concept for a smaller tank
ummm, yeah, never noticed the word planted, do they have very good roots? or are they in the back corners
(sorry bout that, should read the entire question next time)
120 Gal SW, 150lbs Prem. Fiji, 23Gal Sump, 2x250w 15K MH, 4x65w Actinic
3 x Halichoeres Chrysus (1 surfed), 3 x Nemateleotris magnifica, 1 x Centropyge bicolor, 11 x Scarlet Hermits, 6 x Zebra Hermits, 40 x Astrea Snails, 6 x Nassarius Snails, 3 x Cerith Snails