Below is a concept drawing of what that might look like. There would be a covered opening over the sump tank which would also provide access to plumbing.
- The sump tank contains the pump which will operate 100% of the time without a timer.
- Water from the sump tank is poured into the fish tanks.
- Then into the settling tank using a bottom pickup tube not shown here
- As water is pumped into the fish tanks it seeks the level of the spill tube which runs to the grow bed.
- The water percolates through the grow media filling the grow bed
- When the water reaches the height of the siphon it is dumped into the sump tank as clean water.
|An idea I have for a buried system|
Some of the features I like in this design are:
- Reduced exposure to UV will help prevent damage to the polyethylene IBC's
- One pump design with no chance of pumping the fish tanks dry
- Well insulated
- Looks very clean with most of the mechanical system hidden underground
- Easy to add additional grow beds
|Shown from the back side|
Some features I don't like are:
- Plumbing is more difficult to access
- Grow beds are low to the ground
- Periodic cleaning of the bio filter may require significant effort
- The initial cost of digging the hole
- Possible problems from ground water (our water table can raise in the rainy season.)