need some help with 2 plants

[Megamanx]

Hi i have 2 la diva plants in one 20l bucket DWC system with 4 airstones in side. This problem started a few days ago and is starting t progress pretty quickly, the leaves are extremely dry.. what do you think the problem is?

60ml sensi a & b for nutes 5.8pH
temp & RH shown in the pic

i suspect its the humidity, it was at 0% then i started exhausting air outside to pull air into the room from the house, so how can i increaseRH as well. I've never had a problem with the RH before this is the first time its ever been so low

 

[praisehim.]

its your lighting. those stripes are a clear sign of light bleaching. raise ur light..wayyy up for a few days, and also..get that humidity up. a bucket of water would work, just switch it out every couple of days. best of luck !

 

[Megamanx]

I raised the light right up about a foot away now. I have a second 20l bucket beside that one awaiting 2 more with airstones and it hasnt raised the RH, i also tried one with more surface area before i think it raised it 2%..

 

[SmokeyTheBear]

its your lighting. those stripes are a clear sign of light bleaching. raise ur light..wayyy up for a few days, and also..get that humidity up. a bucket of water would work, just switch it out every couple of days. best of luck !

This is 100% correct. When you see the leaves dying in that way, it's because your light is burning them.

 

[Mr Jay]

What type/wattage light are you running? 1 foot may still be too close.

 

[Megamanx]

i meant to say i added an extra foot, its a 400w metal halide

 

[praisehim.]

i'd keep the light five feet above the plants for the first few days, then slowly lower it as the plants progress. your buckets have closed tops.. put a bucket in there with an open top. it'll make a bigg difference.