Help needed on PPM and EC

[Flyhigh420uk]

Hi there im a first time grower from uk with water ph level 7.2 im growing in coco and have been adjusting the ph when feeding to 5.8 im having alot of problems with what i thinks nutrient burn does anyone have a recomended ppm and ec guide for plants in veg and flower cos i dont want to kill these plants with feeding to high strain nutes thanks guys any help will be greatfully recieved

 

[Chris Scorpio]

Pics help a lot

I never go over half manufacturer suggested strength in base nutes or ya can burn the crap outa them

Ppm and ec makes a difference big you know the % of yer nutes are correct, otherwise keep it as simple as u can

 

[BobbyZ]

Cut the recommendation in half...

 

[Flyhigh420uk]

Thats a pic of the plants in question

 

[Pennywise]

Welcome Flyhigh, 1/2 strength is great advice. Also check your temps/ distance to light. Looks like heat/light stress as well.

 

[Flyhigh420uk]

Im using the vipar spectar 450 reflector led light my tents 90x90x180 my temps are 25.7 c and 85%humidity would u say my lights r too close how do u work out where to place your lights also is there any schedule for ppm during different stages so know wat to aim for has told from pics looks like nutrient burn so must be overdoing nutes also wats the ph i should be aiming for when mixing my feed my curent tap water is 7.2 ph and 0.4 ec i have a nutrient wand and ph pen and tds meter but not sure if using it right ive been mixing feed to 5.8 with phd down and run off was 6.2 but then leaves have started to fall in half ends are burnt and yellow so doing something wrong any help greatfully recieved

 

[Flyhigh420uk]

These are the plants im having issues with

 

[Pennywise]

Really it doesn't look like a deficiency, more like Heat/light stress.

 

[Ganjagrandaddy]

How have the leaf ends been taken off mate. Did u cut them off or were they just gone ???. Look "munched" on some so if u didnt do it and they havent crumbled away themselves you might have "guests for dinner '.

 

[Flyhigh420uk]

Really it doesn't look like a deficiency, more like Heat/light stress.

What do u do to correct heat anf light stress any ideas

 

[Pennywise]

You need to raise your lights or cool the temps somehow.

 

[Ganjagrandaddy]

What do u do to correct heat anf light stress any ideas

There are products that can help them deal with heat stress. I use "liquid ice" available from our local grow shop. As for light burn/stress i dont think anything besides moving it higher or somehow dimming it/diffusing it maybe.