Plants getting worse pleases help

[Spooky81]

Hi guys my baby's are getting worse not better !fault it was a mg problem and have add Epsom salt to the last to feeds I'm using bio bizz fish mix and bio bloom to 2ml/l of each iv watered to run off using plain water ph 7.4 going in 7.1 on run off but the plant looks locked out I swapped from mh to hps on Friday and this has seemed to make things worse leafs that are not in direct light seen to be fine

 

[Kush T]

If you ask me.. Those plants are hungry & 2ml per L ain't enough.. Lower that pH with some lemon juice as well.. Now I use that biobizz stuff sometimes & I never pH adjust it.. I always warn people off pH adjusting but in your case I'd knock it down a tad to 6.0-6.5 going in.

Feed those girls bro.. Don't be scared too.

 

[Spooky81]

Thanks for the reply kush T by the time iv add nutes and Epsom the ph was 6.5 and some of the soil I used was pre fertilise so didn't want to over do it

 

[Guerrilla]

He's rigt , ph is to high. Even for soil.

 

[Spooky81]

I was thinking the soil ph would be around 6.8

 

[vince noir]

one thing to ask yourself first before feeding and adjusting ph with epsoms would be ,,how cold and wet is that rootzone during lights out time ,some autos are super sensitive to a drop in night time or lights out temp ..make sure thats spot on before adjusting feed otherwise your heading for a car crash of a time ,cold will show itself as nitrogen def ,but its not its just locked out ..warm it back up and it becomes available again ,imagine feeding the plant when its already full of nutes ..yep itll go wrong real quick .

 

[Spooky81]

It's has been getting quite cold at night about 17 c would this be enough to course problems Vince ?

 

[vince noir]

yep ..some would show yellowing and then necrosis at the tips of leaves ..keep that rootzone at 18 min ,20 is better ..gotta remember that some of these autos have exotic strains crossed into them ,they may be equatorial in nature ,they are the ones that will be more finicky with night time temps in my experience ,sativa crosses ..but keep the enviroment warm and theres no problem .ive documented how quick a plant can die from this temp swing ..and you can lose a plant in 4-7 days with too much disparity between night and day temps ..either keep your temps steady or go for autos with more landrace in them such as sweet seeds black cream .

 

[Spooky81]

I will start to put the heater in side the tent a night now how long till they show sighs of recover if this is the problem ?

 

[Spooky81]

Strains are Dutch passion think different blue marza and white widow