The tank:

The challenge:
The Crypts on the left? I want them out!
The details:
The tank is low maintenance: I only occasionally add some root tabs. Lights are 2× 30W on for 10 hours. W/C 10-20% once per week. No CO[sub]2[/sub], and basically no ferts. Tank is viewed from front and right.
So far I have come up with two options:
1. Rip the Crypts out and put something new in (here is where I want some suggestions).
2. There is a sword behind the wood which I will be spiting (it has started to propagate by root) and then re-plant only one of the two into the corner. In that case, I would still want something to fill the place behind the wood where it currently is (about 1/4 of the way from the left side of the tank.
For obvious reasons, stem plants don't like this tank.
I do not mind fast-growing plants, but I would like something with will not require attention from me to *make it grow*. I can get almost all plants available to the trade quite easily.

The challenge:
The Crypts on the left? I want them out!
The details:
The tank is low maintenance: I only occasionally add some root tabs. Lights are 2× 30W on for 10 hours. W/C 10-20% once per week. No CO[sub]2[/sub], and basically no ferts. Tank is viewed from front and right.
So far I have come up with two options:
1. Rip the Crypts out and put something new in (here is where I want some suggestions).
2. There is a sword behind the wood which I will be spiting (it has started to propagate by root) and then re-plant only one of the two into the corner. In that case, I would still want something to fill the place behind the wood where it currently is (about 1/4 of the way from the left side of the tank.
For obvious reasons, stem plants don't like this tank.
I do not mind fast-growing plants, but I would like something with will not require attention from me to *make it grow*. I can get almost all plants available to the trade quite easily.