I've finally stopped lurking and decided to come back here, now that I have more time. Here's a little update on the bettas:
3 of the 4 girls in the 10g community died. The Petcetera heater melted through the rubber suction cup holders, and I think it released some toxins into the tank, because the girls died suddenly, and without any syptoms. Lesson: DON'T SCRIMP ON HEATERS!! (Advice I wish I had followed before this.)
The melano boy no longer has fin rot, but he keeps biting his tail. Everyone else is doing fine, although I haven't gotten around to planting the 2.5g divided tanks.
Edit: here's a pic of the melted suction cup holder:
3 of the 4 girls in the 10g community died. The Petcetera heater melted through the rubber suction cup holders, and I think it released some toxins into the tank, because the girls died suddenly, and without any syptoms. Lesson: DON'T SCRIMP ON HEATERS!! (Advice I wish I had followed before this.)
The melano boy no longer has fin rot, but he keeps biting his tail. Everyone else is doing fine, although I haven't gotten around to planting the 2.5g divided tanks.
Edit: here's a pic of the melted suction cup holder: