I plan on dividing my 20 gal long tank with these: https://www.amazon.ca/gp/product/B015SL341M/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 I'll be dividing it x3(so four bettas) and will have two 100watt heaters(one on each end) I'm going to monitor the sections that don't have any heaters and...

I'm going to be getting a 20 gal long tank and I'm going to have 3 male betta in it(divided) and was wondering what sponge filter would be best? I'll be getting three filters Option A: Ista Bio-Sponge Filter - Small // Aquarium Supplies Canada - Pond Supplies Canada - Reptile Supplies Canada //...

I decided to acquire and divide a 20 gallon tank in order to properly house my 3 male bettas, because taking care of their individual tanks is really becoming a pain. This will provide each of them with more overall space, and help me retain my sanity, plus be more compact for when I move into...