8 weeks in!! Really proud of this. Fish are all doing fantastic, I added the 8 baby guppies in, they are big enough and LOVE it in here. All the shrimp are super busy and happy. More info below..... 15 gallon Fluval Flex UV sterilizer ADA products No Co2 Inhabitants: 8 baby purple cobra guppies 2 longfin guppies 1 lemon cobra guppy 1 pearl danio 1 emerald catfish 1 crystal red shrimp 3 ghost shrimp 16 various neo's--tangerine tigers, blue dream, yellow, risi, mixed