The owner of the 20 gallon tank (on loan), wants it back today!!! I have to take the sand bottom I put in it out and I'm putting rocks back into it. The sand will be going into a 45 gallon (long), and part of the rocks from the 45 will be going into the 20. Hopefully the baby convicts don't get eaten by the oscars. The betta went into a betta bowl.