Right now both of my 4 in. turtles are in a 40 gallon tank. I know it should be a lot more and all that but i dont have the money nor the space to get anything too big. I dont even know how much longer i will have them since i will be going to college in a couple of years which is why i want to get a second filter.
Right now I have a fluval 4+ internal with filter floss, loose carbon in a media bag, and aquaclear 50 biomedia. Im undecided on whether i should get a marineland pengiun 200B or an Aquaclear 50 HOT. They both seem really similar to each other. What do you have to do to start it up? I was thinking of just using it during the day cause i will have the fluval running at night too. Also, which ones can use non-premade cartidges as in i can use the filter floss and loose carbon in a bag to save on buying the cartridges?
And I know that you recommend a canister like fluval 404 or xp3 but i dont know if i will be upgrading in the future. Hopefully i can find someone with a nice pond who will take care of my turtles.



