Semi-Hydro & Heat

[Rivka]

i got the seedling mats, so i'll see how that goes

[Ray]

I put the S/H pots directly on top of the Hydrofarm low-wattage mats.

[Rivka]

Yeah that's the plan. With drain trays either on or hung below my shelves and thick aluminum foil or flashing right below the heat mats to help focus heat upwards.

[Im Just Saying]

Just to chime in, I also have a seedling heating mat and I had read the same thing about the insulation/reflection as I also thought it did not seem to warm up as much as advertised. I used Styrofoam underneath the mat and noticed after awhile that there was more heat than before radiating upward.

[Rivka]

I'm thinking that styrofoam would do more to keep below the Matt cool than actually redirect heat upwards. No hard science to prove that, just my gut. A sheet of styrofoam wrapped in aluminum foil, now there's a thought!