i'll probably use a gatorade bottle cap. the T is only going to be like 1.5 inches, so the tank should be fine for a while!how big is your T? That set up will be good for a 2-3 inch, but if any bigger you might want to step up to a rubber maid container or a large critter keeper. Yes, it needs a water dish. Make sure you put some cleaned pebbles in the dish so the crickets don't drowned. When you clean the rocks don't use any kind of solvent that leave a film. I use a little bit of dawn dish soap under hot water.
oh i have one lol fo sure!It needs a lid!