Thanks for the reply & yeah but when I see videos I see the mat either attached to the bottom of the tub or just sealed to the wood and tub placed on top. But surely this would melt plastic? I mean the heat mats I had before in the vivs where only 20w and got really hot when I set the thermostat at 30c for them.. Just curios as to why some people's don't melt thought there may be a solution

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