HELP! Yellow brown tips

[Sheester]

Hi guys, any idea what this could be ? I’m new to hydro and it started happening 2-3 days ago, the yellowing/browning of the leaves. Thx flower is growing though

[NuggetMan]

Not familiar with hydro, but there is somethin askew possibly with the soil or the pH of soil and or lacking something in the nutes you are using. pH of water can also affect the plant.