fungus problems?

[Chief BigTittyFlapFlaps]

please, if anyone can offer some help here...   this container began to have issues about a month ago...  slowly one by one seedings are becoming engulfed in this mould/fungus/bacteria whichever it is.  now they are dying at an increased rate.  please take a look and give me some suggestions. 

i have already tried: uprooting, washing thoroughly then replanting in new microwave sterilized soil, letting them dry out a bit (although not fully.)  i am considering trying .03% hydrogen peroxide sprayed all over and letting that dry completely and see if there still dying off. 

thanks guys, any advice would be great.   

[Chief BigTittyFlapFlaps]

Well, all better!  Whatever it was that began to grow is now gone.  The conditions I was providing were likely more conducive to the growth of the offending organism and less so for the growth of cactus seedlings.  Here's what I did to correct the problem.
   
1)  Increased airflow by removing the lid and using a fan
2)  Increased the temperature by placing the container over a warm air vent
3)  Let the soil completely dry out
4)  Watered with 1 teaspoon of 3% H202 per 7 ounces of distilled water
5)  repeat

http://en.wikipedia.org/wiki/Damping_off

[Inyan]

You did a fine job planting those rows of seeds. I generally use hydrogen peroxide right from the start. I microwave my soil or cook in the stove and then pour my hydrogen peroxide into the soil to further disinfect and provide for a more oxygen rich environment at the same time. I'm also a big fan of diatomaceous earth for pest control so I mix that in heavily as well. Looks like you did the right thing though as your problem is no more. Keep those seedlings going strong.