Hi,

I've been planning on getting a BP for a while now and I just started prepping the setup, one of the things I'm having problems with is getting the temperature right in the tub. I'm using a 9L RUB with a heat mat and so far the hot side won't go any higher than around 84F, and the cold side is as cold as 73F. I'm aware that the temperatures need to be quite a bit higher than this on both sides but I have the thermostat up as high as it will go (it's supposed to be at about 92F which it isn't.

I've had it all set up for around half an hour now and it doesn't seem to be showing any signs of getting hotter, does anyone know what might be the problem?

Thanks!