Barliman
Aquarium Advice Addict
Should i add 4 neon tetras or black neon tetras
Currently i have 4 black neons and 5 platies
I would add five more black neons for a school of nice. Odd numbers look better for some reason, and the back neons will school together.
I'm a little surprised you're not seeing ammonia or nitrites, but maybe the bacterial "primer" did the trick. What nitrate reading are you getting? Back to adding fish, I'd wait another week to make sure all is kosher in your tank.
And you can use tap water treated with Prime or another water conditioner to top off the tank.