1. He needs a much bigger tank, try at least 2.5 gallons with a mini-heater and filter. I don't care what the LFS guy told you. See if you can return the half-gallon after you get the new one cycled.
2. He needs decorations and a hiding spot. Use silk plants.
3. You might as well invest in a liquid test kit to check your water. Don't bother with the stupid test strips, we'll just end up having to tell you over and over again to buy the liquid kit. Besides, inevitably everyone buys more tanks and more fish so you might as well have it now
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