Two things.

1.) The oasis watering system drips every 12 hours, regardless of whether or not the plant needs it. You should ONLY use the oasis when you absolutely have to. Its not good for the roots to be wet all the time, they need air too.

2.) DO NOT use miracle grow dirt. Its much better to use a soil mix that is free of fertilizer, that way you can precisely control the nutrient content of the soil by adding your own ferts. I am using miracle grow soil, and what a mistake! Not only does it have very poor drainage (i can only water my plant every 8-10 days), but I ran into fert and pH problems.

good luck