i am going to need another tank but all the fish that i really would love would need a max tank of 30-40 gallon so i may just get the larger tank but the only prob is that i have no job as of now so i dont have the money to do it but i may try and get the tank as a kit from my family for my birthday next month or for christmas and just use the 37 gallon that im thinking for my larger fish that i want and the smaller for my smaller tank. but is there any recommendations for my small tank that could be used from this tank to the next few tanks that id hopefully be able to get? For example decorations, aeration systems/tools, filters, gravel/sand, and heaters. also i dont want to or hopefully would like to try and not pay more than $100 for anything at any given trip to the store at once lol. so any way thank you so far for your help.