every thing going well until today

[xeasyx]

every thing was going well but today when i went in all the fan leaves at the top of the plants were all drying up and looking like there dying every thing was lush green yesterday but today disaster its only the plants in hydro apart from 1 small 1 which is in 1 of the tanks and thats ok if they was'nt getting water do they die from the top down cos everything from half way to the bottom of the plants is ok i new everything was running to well any idea's please cheers xeasyx

 

[DiiZZii3]

imo u fucked somethin up with ph, or nutes.... got pics?

 

[FreezerBoy]

"hydro" doesn't tell us anything. There are tons of ways to "hydro."

Lacking any details, I'll vote with Diiz. Flush and fill res with fresh nutes and proper pH and see what happens.