Heated Propagator question???

Hi i just brought a propagator and most seeds are germinating however i went on holidays and left them for 2 days it wasnt switched on just on windowsill and it was all steamed up and the top of soil was all mouldy and some seeds. i did leave the vents open? and now i have turned it on but after 3 hours it gets steamed up again why is this will it be ok? btw it is a stewards heat and grow propagator
thankyou

 

hard to say if your seeds will be ok depends how bad the mold was. A bit of steam around propagator is ok so long as you opening regularly leave a vent open xhen you away for any time. Copper fungicde ïght helm currrnt seedlings depends what stage seedlings where whrn hit anf how hard.

 

It steams up because the temperature inside the propagator is higher than the surrounding air temp. A certain degree of high humidity isn't a bad thing as it prevents plants losing too much water through their leaves.

 

It shouldn't steam up if turned off unless it is a very sunny windowsill, which I dont think is recommened.

What are you sowing as I wont be sowing in mine until end of February

 

Natty - there is nothing wrong if a propagator is steamed up when it is much colder outside. - as others have said.

But remember that if you have a lid on any propagator, there will be very little loss of moisture - so don't overwater it. When sowing my seeds in a propagator, after an intitial watering I won't water them again for two or three weeks. If neccessary I just spray a little moisture onto the plants - I don't pour water on them.