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Thread: heated propagator questions

  1. #17
    DannyK is offline Tuber
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    If it's in direct sun be careful plants don't get cooked.
    Mine reached 40C+, luckily got it cooled down before damage done.
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    Quote Originally Posted by DannyK View Post
    If it's in direct sun be careful plants don't get cooked.
    Mine reached 40C+, luckily got it cooled down before damage done.
    Should be ok. Has a variable thermostat

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    Quote Originally Posted by 4Shoes View Post
    Should be ok. Has a variable thermostat
    Only if the stat operates a cooling fan!!!!! It's solar gain that does the damage.
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    Quote Originally Posted by DannyK View Post
    Only if the stat operates a cooling fan!!!!! It's solar gain that does the damage.
    Not going to be an issue. Not sitting in a room with big windows.


    Lets bring the subject back to the original question.

    What is the best medium to use to conduct the heat?

    Do you use sand to transfer the heat to the Pot and seed trays?

    I was thinking that the capillary matting option (I mentioned) would make the propagator too damp and perhaps rot the seedlings.

  5. #21
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    Mine came with capillary matting and that's what I use - sitting pots and trays directly upon it.
    You have to be careful with watering and ventilation however you grow,
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    Make 2019 the Year of Random Seed sowing
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  6. #22
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    Coarse/sharp sand best. I'd use an inch and sink pots into it.
    Soft sand would do at a pinch but won't drain so well.
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    Quote Originally Posted by veggiechicken View Post
    Mine came with capillary matting and that's what I use - sitting pots and trays directly upon it.
    You have to be careful with watering and ventilation however you grow,
    Thanks VC.

    Just had the feeling something was missing. Do you use it damp or dripping wet?

    Can see a trial coming on here. Matting will be easy to clean up at end of season, but I expect sand will be a better heat conductor once up to temperature

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    Certainly not dripping wet.
    I sow into damp compost and wait for germination. Then the seedlings need light so they come out of the prop. They don't usually need watering in the prop.
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    Make 2019 the Year of Random Seed sowing
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