I just recently purchased a betta on the 8th without planning to (I fell right in love with the fish! ^^). I already asked this question before but I had 20+ other questions on the same page and I also wanted to get this out in the open for many different opinions.
I also want to move it to a 5-10 gal. tank over the spring/summer when I visit garage sales fish tanks. Since he's in a vase right now which I plan on being his extra home for cleaning his tanks later on, I kind of want to move him to the tank this week so he can be happier while waiting for the larger tank! I know a whole lot about betta fish and the 1:9 vinegar clean + toothbrush method and aquatic plants will go into it ;D Now.... Here's the main focus on this post!
The tank...! This appears to have metal exterior and around the top of the rim. I wanted to find a piece of wood with weight on it so he can not jump out or secure something similar/find a lid. Now, i'm quite sure the gunk on the bottom can be cleaned up, it's pre-owned and I am not sure why there is metal material like this... Was this originally a lizard tank? Why the metal? Is this healthy?
I have aquarium sealant I can apply to all corners and underneath the top too. I also want to keep the water level a few inches below that area as well. Well, what do you think...?
Thank you for all you can do to try to help ;D