Second grow ever need some help

i mean i am already fucked due to the rockwool being ontop of clay pellets wich i should not have done but its ok just cant water them alot cuz they might get rootrot next time just using the clay pellets

Not to worry we all start some where and the best way to learn is to do lol. The algae might cause an issue but u have covered it now so may be ok. Good luck! Also keep the PPM's on the low side and you can always add if needed, just watch what it does over the course of a week and adjust if needed. I learned that one the hard way lol.

i been feeding them 1200ppm all week an they are fine so far but next week is flush week then on to flowering