It’s going to take time for your new environment to find balance, but by knowing what to expect in the first 60 days you’ll be able to help it along.
Aquarium Salt: How to Use It Properly for Treating Sick Fish – Aquarium Co-Op
Aquarium cycling: How to cycle an aquarium - Help Guides
Let's Keep Koi in an Aquarium
Aquarium Dark Start Method – the dark way to start your planted aquarium
How long do I need to leave my tropical tank before I can add my first fish?
My fish recently died. How do I make sure the tank is clean of any disease, so can add new fish at a later date? - Quora
How to Set up a Tropical Freshwater Aquarium (with Pictures)
Aquarium - Wikipedia
11 Easiest Fish to Take Care Of For Beginners
Correct Aquarium Water Temperature
Can I add soil to an aquarium while fish live in it? - Quora
Starting a Nano Reef Tropical Fish Hobbyist Magazine