It might work but I'm a preacher for seachem products. If I was dosing dry salts for low light is go with PPS pro and buy the salts seperate. Kno3, kh2po4, mgso4 etc
Also vals are sensitive to glut in excel so you might need to find another carbon dosed that doesn't contain glut
But wouldn't seachem product be expensive for a low light setup like you said?
Is there not one product that would dose everything or no?
Also with the light and setup I have got do you think hottonia palustris and crinum would grow?
Thanks