Please help plants are almost dead cant figure it out wtf keep getting worse

1200 ppm house and garden aqua flakes a & b is only nutes im using that is it..none of the add ons

im using ro water with 5ml per gallon calmag

i tried to flush the plants by dunking the rockwool into 5 gallon bucket of ro water ph 5.8 a few times up to the base of the plant

4th week of flowering
ph 5.8
79 heat
67 night
humidity 45-55% max
flood table twice daily once 930 2nd time 730 each for 15 minutes

the plants just keep getting worse and worse, one of the plants ive lost pretty much over half the fan leaves and everyday more turn yellow and fall off

can anyone recommend anything? i have been asking for 2 weeks but havnt had any luck in a solution ..i dont think these plants will make it much longer if i dont fix it now...please!


would using nitrex help any?
http://www.bghydro.com/BGH/itemMatrix.asp?GroupCode=NOOCNX&eq=&MatrixType=1

looks like a oh problem to me

I don't think they'l make it, at some stage you must of added something wich your plants don't agree with the hardest thing is tracing back to when it started
there is this one thing i know wich pulled one of my plants back trough to life
, IF it will work with yours I don't know bud you can try flush your plants a few times with plenty if not a bucket of water PH regulated if posible so any nutrient or toxic build up in your medium has been washed out ,
GET REVITALIFT from Canadian Express and follow instructions on bottle Good luck!

id hit em with some of that fungus-bug killer all in one shit. not real heavy !!!!

revitalift is anti wrinkle cream? dont think they need skin care