Heat pad as in the one used to be tucked inside your shoes to keep you warm during winter?
A heating pad like one would use to keep a area of a reptile's tank warm (UTH = "under the tank heater") or one that might be used under small pots with seedlings or freshly planted seeds to keep soil temperatures from getting too cold.
Considering you live in Indonesia, you probably won't need any such thing unless you are growing indoors with air conditioning or happen to live in a cool area. With the average temperatures and humidity common to most of your country, you will likely be able to grow bicalcarata outdoors year round.
Yeah I expect you'll have no trouble meeting the temperature and humidity requirements of N. bicalcarata, and they get huge so I would certainly recommend growing it outdoors if possible.
I want to ask, I used 70% cocopeat and 30% sphagnum as the growing medium here and I was uninformed that you're better of soaking and rinsing the cocopeat before using so I'm afraid if my medium contains too much salt for my bical.
You sure didn't go easy on yourself picking this species as your first nepenthes.
LOL, I can't help it because I thought it would be great since the place where I live leans toward lower elevation XD
And also I kinda like the fangs and the orange color of the bical may have brought me to this imminent doom XD
Also it was around 2 months ago since I pot my bical, almost of all the pitchers were damaged upon shipment except for one compacted pitcher which already bloomed and now it is very healthy with pack of dead ants inside. Should I do it right away? Since probably around 5 more days I'll be finished with rinsing my cocopeat, but it can wait more if I were to use very large pot since I need to rinse another batch. What size of pot do you recommend?
I kind of agree with your suggestion in using chunks instead of peat here. Because earlier this morning I saw my cocopeat turned to mush after the ninth time soaking and rinsing with air conditioner water. Maybe I ought to buy coco chunks today instead of peat? I planned to soak and rinse the cocopeat I have 10 times (each 12-24 hours soaking) and I've found out that after the 7th time it was I don't know, maybe perfect like the peat was very clean and nice. But after that it became mushy. I hope anyone can give me suggestion here but I guess chunks might be the safer option.In your climate, I would worry that your media may be too dense/water retentive. I would think a bit more "open" mix like coconut husk chunks with a bit of sphagnum might be better. Only a nep novice myself so hopefully a more experienced grower will chime in. (The husk chunks would also be best soaked/rinsed for salt removal unless you were sure they hadn't be soaking in salt water.)