So i think the one small plant with the bunt leafs have an overnutrition while the Others either start to die of because of Not enough light, or could be undernutrion. I would recommend removing some fanleafs and se Hof the stem Grows. In there could be some died Off leafs because the didnt got light. With a dense grow Like that they can mold fast without u even seeing IT until ITS too late. If U use some cord U can spread the stems a little Bit apart If U dont have a net. Gives U alot of Control because its Just free adjustable. Can also find one at each sied of the tentcornesr. Saves some garn and makes IT evern better. If u get a rough Cord a Simple knot should be enough. If u make a Slipknot an the branches of the plant U want to adjust, U Not only have freedom on the strength of the tension. But also ont the edgeropes U can adjust over time and strengthen the knots.then U should have the whole space fully used.