I’ve had difficulty with tubs like that keeping ambient temps where they should be. I have had great success with 20 L aquariums though. I know that some people struggle with these as well - temp and humidity however with 1/2” poster board as insulation outside of the tank on 3 sides as well as on top of the screen top, a heat pad and CHE, I have no trouble with temp or humidity. I am planning on starting a YouTube channel and sharing what has worked well for me. I’d say if you can keep your temps and humidity in spec then you should be good. Just make sure your surface above the heat mat doesn’t get above 90-92 and you should be good but ambient air temp should be around 86 degrees roughly.
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