brownies1621
New member
4 plant site
External Pump - Mag drive - 300-500 gph?
30-40 gal lower res - 20-25 gal water level
8 sprayers
two large air stones
Auto top-off system
Do you see any potential flaws, such as accessing the lower rez for whatever reason, or missing key components, etc.
Note: I am not quite sure what to do about about a drain for the bottom rez...The res will most likely be sitting on the ground because of overall height issues...total of 7 ft from floor to ceiling.
Possible solution -- getting a sump pump to pump water out, then using the sump to pump new mixture back in rez?