I just got two new balls, and i have a Zoo Med UTH's on the warm side bottom of each enclosure. The tubs are sterlite, and the temps are staying fairly low. Does it just take a while for the tubs to heat up from the UTH, or is my placement wrong? I'm running only 70 Is there a better way to arrange the UTH, or mount it or should I just wait in hopes the temps rise? Do I need more UTHs? Let me know what you think.