$ 33 is enough to buy stones and these fish for a 20 gallon aquarium?

I have a 20 gallon aquarium with gravel right now, but I would like switch to pebbles. From now on, there is no fish in my tank. I have $ 33 to spend, which would be sufficient enough to buy stones for the aquarium of 20 gallons, along with a few ghost shrimp and a fish or two? Also, would it be acceptable to begin the purchase of a female Betta, and add four years later? if not, Would it be acceptable to buy bettas three women, and add two later?

Yes, it's that Ma and Pa enough.The petshops in Chinatown sell gravel loose stones as cheap as 50 cents per pound. Otherwise Petsmart, Petco and Petland sell 5 pounds for $ 5. You can get away with 15 pounds in a twenty gallon aquarium, if you expect to do a fair amount of seed I would add another 5 pounds. Therefore its cost should only be 15 to 20 dollars plus tax .. I I always receive at Petland. I do not know if you have any male Bettas. Typically have 2 or 3 females and one male. Most women get along well with others.

Tumbled recycled glass aquarium gravel