ok, the heat lamp offers nothing to the plants, but the 2.0 does. the fig and the ivy are most likely still acclimating. i have creeping fig in my 40b paludarium that have been in there 2 months now and still have yet to grow more than a few leaves. some plants acclimate quickly, while others sometimes take more time. if you are seeing new growth, i would ask you try to be a bit patient with them and give them time. they mist lkiely will turn around