mod problem help

hi i have dawnloaded a mod (dukucraft) and i have strange water it s black and white

Ah, then you may need MC patcher. I suggest you get OptiFine, though.

[1.8.1] OptiFine HD_B (FPS Boost, HD Textures) - Minecraft Forum

Download the classic version. Hopefully you know how to install mods?

be sure to read what its compatible with, too.