Hi, End of June I bought 2 beautiful tropical hibiscus(chiffon breeze) from Home Depot. They are placed in an extremely bright sunlit foyer until our sunroom is completed(any day now). They were beautiful for about a month then leaves began to discolor, curl and drop off. I know that the plant needs to be kept moist but must not be overwatered. When they started to fail, I tried placing them outside in the bright sun. Spoke to staff at a gardening center and they suggested I might have pest problems and that the plant could use repotting into a larger pot. I bought nice new soil, repotted just one size higher, gave it a watering with Miracle Gro and waited. I was told to be absolutely sure they had bugs before I sprayed. Since I didn't see any, I waited on that. They seemed to perk up, then started failing again. I did see a tiny bug hanging from a web like string so I brought them outside and fully coated them with immunox, a plant and bug disease spray. They weren't improving so a week later I sprayed again making sure to cover the branches , stems, soil and undersides of the leaves. Still no change. One thing I find odd is that they just don't seem to drink the water. I know not to overwater so I water well when the pots seem a little lighter, about once ever 7-10 days and I make sure they drain and are not sitting in water. I am concerned that once watered, it seems to take forever for the soil to dry out. Almost like they are just dying and not drinking. Yet, there is a lot of budding, new growth on the stems. I have many gardens and do very well with all my plants. I am thoroughly confused by these and don't want to lose them as they will make a beautiful addition to our new sunroom.