Habistat for the heatmat and thermostat, and I am not sure on the brand of my hydrometer. I am already using paper towels as the substrate and have the heat pad 1/3 under the tub. Trying out the 9L RUB with 12 holes only on the long sides, none on the lids, see if that helps. I've cut open a black plastic box and made a hide out of that and put it in the hot end, then put my old hide in the cool end. There's more space in this 9L RUB and I am hoping it's not too big for a baby...