hey i got a 10gal tank here, and i just want something thats looks nice and relaxing, i was planing to do a planted tank(but not soo many plants) and some simple fish, and i just want to noe if i really need , a heater, or water pump, and a filter. i do have a filter and some lighting but it isnt for this tank. soo do i really need all tthis suff?