i have a 10 gallon tank. i might get a 29 gallon if i need it. so could i have angels in a 10 gallon?how many? Should i plant the tank heavily?What kind of plants and do i need another light cause my incandescent? right now i got a aquaclear 30 is that enough filteration for a 10 gallon? Do they like gravel or substrate for plants on bottom? thx for help and any extra info u can give me i really appreciate it.