Tub setup help

[gusanr14]

Not a super expert but have been dealing with tub set up for months and asking questions thousand times etc lol
I have a perfect tub set ups at this point.

As for heat pad/tape, as long as it is controlled by trustable thermostat it should not matter.
First, where is the thermostat probe located to reach that 90 degrees? it is recommended that the probe is in direct contact with the heat pad, under the tub, so sandwich the probe between pad and tub. Then, you want to adjust your thermostat so that the surface temperature "inside the tub" reaches 90 degrees on hot spot. You have to keep measuring with temp gun and adjust thermostat. For example, if you set thermostat to 90 degrees and when you measure the actual surface temp of the tub at like 95 or something, you lower the thermostat to have proper temp inside the tub. Heat mat does get hotter than what you set your thermostat to because probe is not only measuring the heat pad temp but air around it which is not a problem, at least for me. As long as you have a proper hot spot inside the tub, it shouldn't be a problem. Plastic shouldn't melt as long as it is controlled.

The ambient temp part was the problem I had before setting up my tub. I thought heat pad would help out a little with ambient temp, but guess what it barely does. So never rely on heat pad for ambient temp. For tubs, the actual room that the tub is in has to be at certain temp. If your room is 70, tub ambient will be around 70. You have to either use heater in your house, or space heater to higher the room temp. For me, when I set my space heater to 75 degrees, the temp inside the tub goes up to 78 degrees. I guess they trap in heat a little but not for long so space heater are always on during winter. Summer shouldn't be a problem because the weather is really hot most days. If hear can't be used, I had some advice from other people about a heat lamp with lamp stand to make the air hot around the tub but not too sure on this because I've never tried it.

Holes, they will breathe. People put holes to control humidity so some will have less, some will have more. I heard someone had 4 holes. I mean there will be some gaps between lid and tub if you are using lid.

Honestly, as long as room temp is good and hot side temp is good, it should be all good to go.

Can't really see the picture well but is that your current set up that your bp is in? I only see a hide, unless you just removed water bowl and substrate for some reason.