That will keep crabs, fish, snails, maybe a turtle, and other interesting critters. I've kept lots of FW tanks and am fairly descent at SW but have never gone planted FW before. I have a 5 gallon that has stock lighting. About every 6 months I switch out the plant I keep in there (bc it dies!). I'd like to stop doing that and have a LOT more plants in there. Something about C02, certain bulbs, I believe is what I need to learn about. Looking for some input on this. Also, the tank is in my 4yr old's room - I am thinking the C02 part is OK there (I currently don't have any C02 equipment), but if any warnings on that, please let me know. I went to the LFS, but they wanted me to buy a TON of equipment and drop a few hundred bucks... A. it's not worth it to me at that price and B. I am thinking they just wanted to rob my wallet. I don't see any sticky's on planted tanks, so a general 'how-to' or link to that would be appreciated.