Tetra Hydro cultivators THCLogo Design Contest Logo Design Contest Contests / Tetra Hydro cultivators THC Tetra Hydro cultivators THC has selected their winning logo design. For $275 they received 138 designs from 30 different designers from around the world. Find out how LogoTournament works How LogoTournament works Contest Annotation Delete We are sorry, but the time to edit this annotation has expired. Save Cancel Entries by WastuCitra Return to Contest Return to Contest Comment Activity Order by Ranking Entry Number Comment Activity To leave a comment please click on the logo. Withdrawn New Comment Activity No activity yet.