What is this ????

This is Penny She is 170 days old she went throw some other deficiencies like magnesium def and Maybe I think Phosphorus def and I correct them. and now she is on the 3rd week of flowering.

Lights: 4 CFL 2 23W and 42W blue and withe sectrum respectively
soil: regular soil from Home depot
Water: is reverse osmosis I use the water we drink because here in my country I don trust
Nuts: the violet purple and epson salt but 1 week ago I give her guano I try it first on another plant and after one week the other plant was OK but this is happening to penny any ideas???

Looks like liver spots, old people get them, and your plant at 170 days old certainly qualifies for liver spots.

looks like phosphorous deficiency..........2nd row,2nd column