Ohuhu Seedling Heat Mat Heated Propagator 2 Pack, Plant Heating Mat Plant Warm Mat IP67 Waterproof, 21W Hydroponic Heating Pad Greenhouse Heating Pad for Seedling and Germination 10"x 20.75"

These mats do a great job with my seedlings, they are germinating much quicker. They don't seem to use that much power for being on 24/7. There are a good size, normal size trays leave room for a smaller tray on the mat. Great to find them waterproof because the trays produce condensation that is regularly dripping on the mat. Recommended!

Really good, keeping one steady temperature, I was able to put 2 seed trays on each heat pad, definitely made a difference in the green house and speeding up the seed growth, 3 rd one iv bought, really recommend them

The Ohuhu Seedling Heat Mats are a solid option for promoting seed germination and plant growth. They are well-designed for their intended purpose, providing consistent warmth to support seedlings and young plants. The mats are waterproof (IP67 rated), making them safe for use in greenhouses or hydroponic setups where moisture is present. However, it’s important to note that these mats do not allow for precise temperature control. I initially bought them hoping to have that feature, but unfortunately, they only provide a consistent baseline heat without the ability to adjust the temperature. For those who need more control over specific growing conditions, a different heat mat with adjustable settings would be a better choice. That said, these mats are reliable, easy to use, and durable for general plant propagation. They work great for straightforward seedling and germination tasks, as long as you don’t require fine-tuned temperature regulation. If this meets your needs, they’re a worthwhile investment.

I bought this heating mat to bulk ferment my sourdough and it’s working really well. Normally it takes 12-16hrs for bulk fermentation in my cold temps but this has cut the time down to 1/4 - around 4 -5 hrs - i use the mat like a blanket around bowl. Temps for my dough now 76ish from 60’s -

These are better made comparing to one I bought a few years ago ,on unfurling the heat mats I lay them flat with 3 hardback books at each edge to flatten before use this took 3 days ,it's never let me down , the temperature the mat reaches is not variable and I found it was a bit hot for seedlings as dried the soil within a couple of hours ,Iv got around this by placing folded cardboard between the mat and the plant pot , I'm glad I have the mat I have seen my seedlings germinate in less than a week in an unheated room , Iv kept the box and sleeve it was received in and with careful storage when not in use can image I will get many years of use

Very good,does exactly what it's supposed to, good value too.plus nice size.

It works

Great addition for my seeds