Need/want some ideas

[lordheavyc]

Ok so here's the tank details before anything.

Tank specs: 15 gal tall, freshwater low tech, hang on filter with sponge media. Cobalt submerged heater set at 82. And LED light strip. (Unsure light output)

In the tank: 4 neons (had five but one disappeared) 1 Male dragonscale betta, 3 kuhli loaches. Sand substrate with a single piece of Malaysian driftwood. 3 Amazon sword, a bunch of dwarf sag, and salvinia minima floating.

Stats: the tank has held these parameters for the last 6 months
PH 7.0
Ammonia 0
NO2 0
NO3 mg/l
Phos .25 mg/l

Ok so now that's out of the way. I would like opinions or suggestions or adding or changing things around. I'll put pictures below. I want to liven things up a bit as this look is getting a little blag for me. I would really like to avoid adding co injection as I don't have a lot of space for that kind of set up yet. Fire away I'm open to most anything.

 

[Delapool]

Tank backing picture would be my thought.

 

[V227]

Might add a random scattering of small rounded river stones, with one or two slightly larger irregularly shaped stones.

 

[Mysticalkitten]

Malay try a backing on the tank and add some rocks of different sizes flat ones were you can build a cave, my neons and pladies love swimming through the cave I made for them out of rock and to make sure it was save I used glue that was safe for tanks to glue the rocks together to make the cave so it won't fall on any one.