einamioanswered grow question 15h ago Don't overthink it dude, I used FlashClean a few times, followed TA recommendations - everything went well. I didn't notice anything drastic with ot without it... I think it is mostly used to clean old resedue but I might be wrong. TA know what they are doing, I switched completely to hydro with ta triple bottle formula and was able to finally let it go and chillax :)