I have a 29 gallon tank with 4 fish that has been set up for about a year. This is the stuff i plan on buying for the tank because i think it needs it. Im really looking for opinions so let me know. First the light thats on it is from a 10gallon tank. I was going to switch it to this one off ebay 24" - 30" T5 HO Light Hood Aquarium Marine Cichlid 48W. Will the change in light instantly effect or stress the fish? Next I was going to get a 350 Marineland Penguin Bio Wheel Power Filter. Any opinions on this filter? and last I saw a 30 gallon on youtube with what looked like 3 10" airstones one one each side and one on the back. Is this too much or can you have to much bubble action? And would a tetra whisper 40 be able to run all three of these air stone? Yes, lots of questions but would love to hear alot of opinions. thanks and happy to finally post something!