knifegill;4354360; said:What kind of plecos are they? How big are the turtles? Everything else should be fine stock-wise if it can outrun the turtles.
What is your "1 barb"?
You can never have too much filtration and turtle tanks are usually messier than fish-only tanks, so add as much as you can. You'll want mechanical and biological. Some people will set up one filter for just mech and one for just bio, but then the bio becomes clogged sooner since it's not protected. I've learned now that putting mechanical filtration before the bio in at least two filters makes maintenance soooo easy, and you have two complete systems in case you decide to clean one (reduced bacterial colony) or one shuts down (bacteria stop functioning or die completely). I have three filters on my 125. A magnum HOT with mech and bio, an Aquaclear 500 with a mech sponge over the intake and two bio sponges inside (that take a lot longer to clog now that I have that sponge on the intake!). and an old penguin 330 that's almost dead, so I just dedicated to mech only so if it dies it's no big deal. I use nylon paint strainer bags for all my mech. Really affordable (like $1-$2 a bag) and effective. Aquaclear sponges are my favorite for bio, since they last for eternity and you can easily buy them all by themselves and add them to any brand or model of filter for the most part.
ah I have a fluval underwater filter, I think its for 30 gallon tanks, so should I put a sponge kinda like aqua clear and leave it there forever?