1. What type of filtration system do you recommend I use if I plan to have around 40 gallons of water in the tank? I have heard that turtles need extra or even double filtration since they get so dirty and I am not sure what brands are good, They had a whisper in the previous tank and it is way too little for this new tank.
2. Do my little guys or gals need an air pump? I know they do not breathe underwater, but is this necessary, or even beneficial to the turtles, or would it be wasted space in my tank?
3. Is there any other major things that I need for my turtles? I have a basking area, plenty of room for them to swim, I feed them 2 times a day (once in the morning and once at night) and turn the heat lamp off at night and back on in the morning when I give them food. Do they need any other things to maintain their healthy lives and keep them clean and not sick?
Thank you so much for your help!

