I bought an air pump at PetSmart today for my terrarium. I got silicone tubing with it that I have run into the water sitting at the bottom of the tank. It seems to be doing its job so far, but I have a few questions:
1) Will the tubing (being silicone) release harmful chemicals into the water that might harm my plants? Would plastic tubing be better?
2) Am I setting this up right? Do I just have the tube run into the water and have it pump the air there?
3) Should I leave the pump on all the time? (as opposed to my lights and fan that run only during the day).