I have been told about 2 planters of succulents in an office setting. They have had fresh soil in the past 2 months and unfortunately had not been in good light. They were just moved to very good light now and have been doing good. Unfortunately one has had lost 2 of the succulents (see picture). They also.appear to have produced small flying gnats and possible ant like pests. The ant like pests come up from the soil when the planter is lightly shaken. I need help on this one. Been reading alot of tips. But would like to tell the office people what to do.