should i get the 5 gallon hex for 30.00 or the 10 gallon kit for 40?? still will have some money for sand and already have a backround... and the fish that will go in the 5 if i decide to get that is- my frog my 4 platys 2 kholio loaches 2 mollys and thats about it and if i decide to get the 10 then i will have in there is- 2 lil juvi female cons my frog 4 of my platys and my 2 mollys... so which is it that u guys like better????