Beg to differ mine is a probably a little more complex than an aquarium with a sump filter, as mine is actually 3 - 275 gallon tanks in steps, so they can flow into each other, which flows through a 5 gallon bucket full of holes, and filled with lava rock, suspended above a 30 gallon barrel, with a sump pump, that pumps the water into the highest tank
Each tank drains with self starting siphons into a sediment filter, that drains into the next lower tank… so there is a lot of airation
The lowest tank is just for water conditioning, there is giant duck weed, I’m growing for filtering, and to feed the tilapia, when they get to that stage, as well as hydroponic vegetables… I was getting mosquito larvae in that tank, so a couple baby bichirs and a few mosquito fish were added to that tank ( No tilapia in that tank )… there is also a baffling system in the lower tank to keep the Duck weed out of the filters
So mine is a fairly complex system, with a lot of variables to figure out, like adding water from evaporation, what happens, with varying amounts of rain, and each of my tanks is heated, as tilapia grow the fastest with water around 88 degrees… sp I’m doing my best to keep the water temperature as close to that, with varying temperatures from the lows overnight, to the highs during the day, and with all the airation going on, with those varying temperatures
