Hi welcome to AC,
Just wondering if you added a quality dechlorinator like Prime to your tap water, before adding your fish. I agree that 5 neons and a glofish Is pretty overstocked for a 2.5 Gal. I know It does'nt appear that way but it is what it is. I think you're ok with the 3 neons and the glofish. You'll want to do a water change anytime the ammonia level reaches .25 or higher, and or when the nitrIte level reaches .25 or higher. Make sure you add a declorinator (Prime recommended) to the tap water and match the temperature of the tank water when adding the water. Smaller tanks are harder to manage than larger tanks, so your pH may fluctuate a little bit when doing water changes. If your tank does not have a heater you'll need to get one, neons are tropical. Good Luck and again welcome to AC!
Just wondering if you added a quality dechlorinator like Prime to your tap water, before adding your fish. I agree that 5 neons and a glofish Is pretty overstocked for a 2.5 Gal. I know It does'nt appear that way but it is what it is. I think you're ok with the 3 neons and the glofish. You'll want to do a water change anytime the ammonia level reaches .25 or higher, and or when the nitrIte level reaches .25 or higher. Make sure you add a declorinator (Prime recommended) to the tap water and match the temperature of the tank water when adding the water. Smaller tanks are harder to manage than larger tanks, so your pH may fluctuate a little bit when doing water changes. If your tank does not have a heater you'll need to get one, neons are tropical. Good Luck and again welcome to AC!