I'll definietly talk with my parents about getting adjustable heaters. We need ten watts or 7 watts specifically because the tank size is 1.5 gallons.
After the scare last night with the fact I plugged in the wrong heater...(Thank god Akira-kun is okay. He's been doing his wiggle dance all morning.) The tanks temp is back to 81. I'm going to get a new heater for both tanks and get my money back on the pre-sets.