How often are you feeding them and watering them?
I wouldn't "flush". Tbh your plants are not fucked off at all. You need to resume nutes again but at a lower dose. Back off 25% of what you were giving them. Be sure you're not overwatering. Make sure you're getting some runoff too.
Okay ..today I remove some of the tips because they like basically turn to dark brown and real crispy there are 8 9 and 10 weeks old I want to enter them into the flowering stage however I'm not going to do it until this problems fixed and I definitely see run off when I water them
What's your feeding schedule?
Right now they're only getting 6.5 pH water every other day there in 5 and 7 gallon pots nutrient are Fox Farm Trio I haven't used any Revolt 2 weeks
How much water are you watering with??
See that's my problem I do it by eye and I don't know how much to give them
I think part of your issue is that you are bottle feeding unnecessarily. Both coast and frog have nutrients in them that would only require top dressing when necessary.
Ohhh ok the soil alone has lots of nutes