Remember, you need a 30 gph or 60 gph pump. The 30 gph will not disturb the peat too much. Weed block is put down first so all stays in place and it offers little resistance to the water. Though it does cause the water to not only bubble up, but following the path of least resistance, fills the container they are in with constantly moving water. Moving water will draw oxygen into the soil and keeps it fresh, and because of well placed holes drilled in strategic places, the water exits, falls back into the base, and keeps adding more oxygen with every drip. My soil base is 17 years old, and still supports the plants in it with absolutely NO LOSS due to rhizome rot. Every year, 1 cup of white vinegar into the water base, keeps the soil and water acidic. BTW, where the water comes up, I cover that with dead (boiled dead) LFS about an inch or two thick. I cover the rest with Canadian Sphagnum Peat Moss. You have seen the pics of my working mini bog, and as you know, it works like a champ. It isn't that difficult to make. But finding the right parts is a pain sometimes. Visit any nurseries that specialize in Water Gardening, and get some ideas for fittings and flanges to hold the water feed tube in place to do its job, filter basket under your pump, and tent a piece of weedblock around the filter basket, and using plastic ties, close the weed block around the filter basket and pump, to completely enclose the unit. This prevents any breakdown of peat, or sand to block your pump from working. Maintainance has been low, but the old dish I use for the top of my bog is falling apart, and I will HAVE to replace it soon. Maybe, that would be my photo oppurtunity to show how to do it. When you build one, I want to know how well it is working, and how happy you are you made one. WORTH IT!!!! DEFINITELY!!!!