Is the 3 fish compatible to a each other
1. I have purchased a tomato clownfish, bicolor angelfish, and a domino damselfish during the boxing week. Those 3 fishes are all in the same tank at the store. (I was watching the 3 fishes and I dont think they fight) I asked the store to keep my fish because I'm only halfway through my cycle. I have a 20 gallon tank. Is the 3 fish compatible to a each other? And if its not, will the store let me have a refund?
2. These are my current levels.
Salinity level= 1.024
5.5lbs of live rock
10kg of crushed coral (sand)
Can someone predict how long my cycle will complete?
3. If I currently have 5.5lbs of live rock in my tank, how much more live rocks do I need for a 20 gallon?
4. Does a marine tank need air stones? I currently have a 1inch ball for airstone.