Mary L asked:


i like marine aquariums but think they’re too exspensive so i decided to get tropical fish. i’d probably get a 40 gal. what are some good fish and what does cycle the tank mean. o and i’ve had tropical fish before. i’ve had a bala shark, chichilids, a rainbow shark and others. and i want pretty fish with lots of colors. and i really like bala sharks could i keep a school of 3 of them in a 40 gal. w/ other fish or will they grow to big. my other one didn’t grow at all in my ten gal. tank and they’d be w/ other fish. and (sorry for so many questions) would it make sense to get snails for tropical fish or no. and is there any cool inexpensive small eels also(that are freswater not salt). and i would need a heater, filter, and thats it am i missing anything. thanks in advance