Pool pond with bog in the middle???

[Mmathis]

@PoolPond I am wondering if we are all talking about the same thing.

To clarify, you are talking about a “layer of pea gravel“ that will have piping run underneath it, or through it. Plants will put down roots in the gravel, and with the help of the water flowing through the pea gravel, the plant roots will soak up the nutrients, making the water cleaner. This is what we think of as a “bog-type” filtration system.

But the pea gravel has to be contained, or held back somehow within the water column. Most “bog” plants need the gravel for their roots, but they don’t need a lot of water on top of that layer of gravel….maybe a few inches. Think of it like sinking a potted plant (still in the pot) under water. The pot holds the soil in place.

There are many ways to create or “wall-off” a bog.

I apologize if I am totally misunderstanding what your goal is, but maybe these drawing will help.

 

[PoolPond]

Just finished my Filter box that has 8 sqft of filter (not in picture) ordered filter cloth from Grainger 24" x 20' rolls $28!
This box holds 2 pieces of 24" x 24" filter (each sandwiched between 2 stainless screen one on each side of pump that I can easily pull up/out and rinse off. I The large surface area is so I can sweep the track around the outside and walls to get rid of all the crap and dead algae. The box also has a 120 watt UV bulb I can plug in if a bloom starts or after I use some string algae killer.