Maybe this is a better place to post this question..
I have a 10 gallon betta tank with a top fin filter.. I've asked multiple people at petsmart if you could cycle a top fin filter and how, and all have told me you cant. There's no where to sustain good bacteria. which true it may be or not, why would they make them if you cant cycle them? Seems odd! So I've tried looking for a marineland biowheel but the smallest one I have ran into is for 30? I think or 20 gallon tanks. I don't want to put too much of a current in my tank! My poor bettas will be tossed about all over the place. So how would I go about cycling my 10 gallon? Am i missing something?