wow , Im not sure,. I know your plants are sunset hygro, and wisteria , that ugly algea seems to be black brush ? HTH ~ maybye black hair algea ... but seems to thick .. Hope you get answers fast , but remeber its NOT what your dosing , its somthing in your tank ,MOST likely your co2 is NOT at a correct level . read some of tom bars advice. and thier is also a algea id form on one of these threads, I will try to find it for you . It is not going to help to just treat' the algea and get rid of it, you need to find the sorce' . I know its not from ferts, It could DEF be from your co2. what is yoru rate thier ?? what size tank is this, and how mant plants are in here >? and how much lighting is on this tabk ? low lighting and too much co2 is what it seems like from my novice eyes. HTH ~& GL !