Having two heating devieces also gives you added protection should one fail.
Would have liked a thinner piece of celotex for the panel but that's what I had in the garage.
Each shelf can hold 3 cylinders so potentially 6 gardens, its pretty easily expanded if I was luck enough to get that far.
Arriving this week are 3 cylinders, 3 discs for the lids, acrylic sheet for the front.
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