A little update on this one....
We had an outbreak of diatoms last week, so upped the water changes to 50% daily, making sure to agitate the plants and brush the rocks before and during the water removal, so as to get rid of as much of the diatoms as possible. We also introduced 5 oto's and about 15 amano shrimp too as a cleaning crew.
I got over to the store today for a look, and it's doing pretty well. The diatoms have all but gone, and the glosso and acicularis are rooting well, and spreading too. I was pleased to see the riccia has recovered well, as it was looking a little sorry for itself last week.
We've concluded that the supposed E Tennelus that we were provided with, and had assumed was in it's emmersed form, is actually Sagittaria Natans ( thanks for the id Mark
)
It's throwing out runners like mad, with plenty of new plantlets, so is obviously quite happy in there, but it just doesn't look quite right as it is paler then the E Tennelus would have been and means all the plants are the same shade. I think we'll see how it goes, and will add some other crypts initially, maybe walkerii to add some reddish tones. If the Sagittaria tries to take over it may have to come out.
Here's a couple of pics off the phone today after I trimmed things a little...
Thanks for looking
Tony