Today I tried to develop a roll of film in Ilfosol 3. I've developed film before with D-76 but this is my first time using Ilfosol 3. My steps were as follows: Gentle agitation for first 30 seconds, then every 15 seconds at the end of each minute. I shot HP5 at iso400 and followed the times exact as on the Ilford website. The issue that I have is that when I took the negatives out of the tank, they had what looks like light leaks on them. I read online that this might be caused by too little developer in the tank. Any Ideas on what caused this?