I'm going to be adding 3 ottos to my 20 gallon tall. It well have 10 blood fin tetra and ghost shrimp. I know that I need to wait for the tank to season before adding in the ottos but I'm not sure how long I should wait? I'ts planted with 1 anubias going to 2 more soon, 2 java fern and 2 amazon sword. It's been cycled (still no fish...) for four days. Thanks in advance