What is this?

[CrystalBaller]

indoor plant, 2 leafs fell off...plant is 2 1/2 weeks, 8 inches tall and healthy. except the bottom leaves fell off and as you can see the tips have black spots. did I overdo fert? fish elumins 5-1-1 , at 1/4 tablespoon pet gallon. thanks,
cheers

[YES]

Looks like too much water. But dont trust me im not an expert.

[slipnslide087]

not overwater, its most likely chemical burn from over fert, or the light its under could just be roasting the plant, make sure the l;ight is 12-15" over the plant, and if its in a foil box, take the foil off it isnt helping much, it would more likely be burning the plant.