In the last two weeks I've only fed the fish human food, as listed below:
Monday, May 9: beef liver
Tuesday, May 10: chicken
Thursday, May 12: chicken
Friday, May 13: calf liver
Monday, May 16: chicken
Wednesday, May 18: chicken liver
Thursday, May 19: fresh peas
Friday, May 20: chicken
Saturday, May 21: chicken liver
Monday, May 23: chicken & buttermilk biscuit
All the food are cooked and minced into extremely tinnie winnie pieces for the freshwater fish. No flake fish food is given or frozen fish food (though I may in the near future supplement their food plan with frozen bloodworms (that is, 100% bloodworms).
I've periodically liquid water tested the tank for ammonia, nitrite, nitrate and oxygen levels, all were within normal range. Ammonia never rose higher than 0.50 ppm (which is not a toxic level), after a water change, the ammonia dropped down to 0.
I've found, so far, that if the fish are fed only so much that all the food is eaten within 2 minutes after I place the food into the tank, then all is fine.
So again, I have eliminated another processed item from the tank (fish flake food, wafers and/or pellets).
I will give you guys updates every so often over a period of a year.
The tank as of now is a little over 6 months without filtration of any kind, without overhead lighting (only sunlight as the light source), no water or flow pumps, and no heater (taken out only during mid-Spring to mid-Fall, then placed back into the tank for the colder months).
Only thing in the tank is the two flexible bubble wands powered by one air pump with two hoses and suction cups in order to produce the water surface agitation (oxygen).
Outside of this, only wood, live plants and rock with river pebble are in the tank.
All comments, critiques, suggestions and/or compliments (((smiles))) are welcome.