PICS ! Multi Problems ahhhhh! -- info -- please help

black gold organic soil
3 weeks old
flushed soil for the first time 2 days ago and it literally doubled in size within 8 hours (as far as stems and height)

bottom leaves have nute burn and have stopped using nutes for a week now yet everything continues to burn ...bottom leaves are now curled upwars at the tips (overnight)

all new growth has brown tips -- all leaves are slightly yellowing (at the sides)

Bottom tips curling upwards is a good thing. Sometimes it signifies too much humidity. Brown leaf tips is usually too much heat.

You might want to hit your plants with a good dose of CO2. I use CO2 tablets that you buy from aquarium supply stores. The heat and humidity go up, but the plants love it and elevated levels of CO2 they can withstand highter heat.

+rep thank you for the co2 idea, i had no idea they came in tablets. plant is really going downhill, im dissapointed no one else answered this post. all leaves are now turning yellow on all the ridges (not sides) like middle of leaves , the ridges(patterns) all the way up the leaf