Posted: Wed Jul 30, 2008 5:07 pm
Gravel is bad because once they get big enough, the turtles will eat the gravel. One of the dangers is that it will get impacted (stuck) inside their bodies, causing several potential problems and even death. With sand, provided it has been properly cleaned or is a known safe aquarium sand, it will not harm the turtles by getting stuck and should just pass through their digestive system without any ill effects.
Just make sure you have a good scoop or net to clean the sand with, or are prepared to use a Python to vacuum the sand to keep it looking clean.
We have decided to go with river rocks rather than sand for Spike's new tank, partly because we prefer the look, but also because budget is an issue and I wanted to put what we had into a good aquarium, heater, & filters rather than the substrate. We bought a large bag of river rocks (labeled as gravel) from Lowes for $6. I already had a Python that was used for a previous 55 gallon fish tank and am confident that I can use that, along with a pleco, to keep the bottom clean as necessary.
1 RES, Spike (In new home with 1xPleco, 1xRed Zebra Cichlid, 1xYellow Lab Cichlid)
2 Cats, Blossom & Panda
2 Tropical tanks (plecos, platies, tetras)
2 Handsome Blue Bettas, Blueberry & ?
1 Bright Red Betta, Strawberry
1 Feeder guppy breeding tank