Lighting question?

[Kisa]

I have a 12x12x18 Exo Terra viv planted with Pothos, Monstera and Syngonium for my milk frogs.
I'm currently running 2x 26w Repti Glo bulbs and was wondering if 2x 13w bulbs would suffice instead?
Our electricity bill was quite high this quarter and the vivarium has been the only new addition during this time, I'm just trying to save us some money if possible.

Thanks for your time.

That's weird...my 12x12x18 rainforest kit came with a compact top that only fits one bulb, did you buy yours separately?

Currently I'm using a compact top (medium) on my 18x18x24 with two exo terra compact bulbs, a 2.0 and 5.0 during the day and two night glo moonlight bulbs at night and I haven't heard anything from my dad about electricity yet so...>>

On my 12x12x18 I have a Golden Pothos and a Snake Plant and plan on using an Exo Terra 5.0 during the day and a Night Glo at night. I haven't had any light on the plants except the sun that filters in through my window since I put the viv together last week and the plants look great so...Idk about keeping them healthy, I don't have a green thumb. XD

[Leefrogs]

Floresent bulbs are usually???? 12 watt. Not sure, should say on it sumwhere, but I'm refering to incandesents in a refector dome. Heat pads, heating cables all that have a wattage printed some where. All easy to figure out to penny. I had a roomate once who was afraid of the dark or something, and we share da light bill. Just in case ur all wondering, I'd wake up and every light would be on. Me personally, can see in the dark. LOL

[hereces]

Thank you for all the info Ginger and Lee, I now know that it's not my lighting and heat mat eating the electric.

Kisa, Yes I did buy my compact top separately, The viv didn't come with one.