If the pots are already breaking down, it sounds like they're staying pretty damp. Can you lighten up on the watering a bit? Just enough to keep give the plants enough water, but not so the pot is soaked? Also, make sure that the pots never sit in water or on something that is constantly damp (like a wicking mat). If you're not running a fan over your seedlings already, you might try that, too. Moving air will help to dry out the pots a bit..........Usually the problem with peat pots is that they DON'T break down, LOL!, even after they're planted out in the garden.....By the way, you are talking about *pots*, yes, not the netted pellets?.......Good luck!!