1st try

If your grow light is legit 300W you won't need to add any light unless you choose. I currently use a 150W Marshydro TS1000 light in a 27X27X63 tent with great results. Hope this helps. Happy growing ✌️👊

hey there that type of burning is from pH fluctuations best pH for soil going in is 6.0 and but soil buffers it up to 6.5 usually. probably something happened with the water at some point which made it fluctuate too quickly , if it's not getting worse and worse then the problem already happened and fixed itself. Otherwise just get some pH regulators and use those. Hope this helps ! 🚀

Yeah, i think she's almost ready, i would flush her and wait for the trikes to be getting amber for the cut.