sdem1

Hi, I've been trying to run gels for a series of PCRs to test primers. However the bands so far have been curvy, slanted and very unclear. I then tested a 100bp and 1kb marker in a gel I made to check that the error is from the gel electrophoresis and not the PCR. A similar problem occured however, and I can't seem to figure out what is wrong. I'll attach both pictures. The first gel was run at 80V and is a 3% gel. The second gel is also 3% and it was run at 90V. The third gel is 2% run at 100V. If anyone has any ideas on what to fix that would be great. Thanks!