I am looking to do a bog garden in my regular garden in front of my house. I recent got a few VST's and 1 sarr. I also got a drosera from Lowes today (can this be outside with the rest?). Anyway my plan is to get one of those black plastic trays and sink it in the ground. Do i need to put holes in the bottom? Also i guess i plan to use a small funnel for watering and keeping tabs on water level. Is there any trick to the funnel or do you just pinch it closed some and shove it in ?