water plants

Messing with them again. The tall Rotala I thought the leaves were reddish as a color variation, but they have been getting paler and paler, looking positively anemic while the new, top leaves bright green. I wonder if the lower leaves are dying back from initial shock, or if not enough light reaches them? I stripped them off, pruned and replanted the tops hoping to promote more growth but if it's the light issue then I've probably killed them!

The water Wisteria and Val are looking very nice, on the other hand.

I took out the large fake coral piece. It looks very sparse now. I need more plants, and want to put in a piece of driftwood or bogwood to help lower the pH. Lots more to plan while I continue to wait for my cycle to finish...