Ok so after reading and looking at all the tank set ups I changed mine. I had a 2.5 gallon split for about 1 week until I could figure out what to get and where to put the tank for the new baby I found at petsmart. My one fish kept getting over the divider and the poor little baby betta was terrified. So I grabbed one of those big 2 gallon cookie jars some have on here for the baby last night. I love the way they look set up so I decided on that. I got it all set up put the heater, thermometer, and conditioner in it and reacclimated my baby to the jar.
He seems really happy but im worried about the water temp. I have a 10w submersible heater made for a 2-5 gallon tank which works great in the 2.5 gallon acrylic tank but it doesn't seem be heating the water as well in the glass one. The water feels really warm if I feel it so I can only think that maybe the thick glass is throwing off the glass thermometer suctioned to the side? Or maybe the glass gets colder then acrylic and the heater isn't strong enough to keep the higher temp? I usually keep all my tanks about 78-80 and use the same heater and haven't had a problem. But on this tank the thermometer says its about 72 which I don't like at all.
What do you all think? Does a glass tank not hold heat as well?