Thanks guys. I really didn't know what to expect with weed but I've got to tell you that based on what I've seen this is definitely a doable approach if you do perpetual gardens. As far as the fish and eating them I'm not sure I could do that until I started expanding operations and adding fish. As it is now they see me coming and expect me to play with them as I feed them. It's a trip.
i've had an idea for aquaponics and blooming plants for a couple
years now using a mixed medium instead of rocks. i'm gonna
give it a try with peppers next year, and if it works i will try it with
herb when i can grow again.
15 gal coco chips
12 gal napa part 8822 (crystallized diatomaceous earth)
17 gal hydroton
3 gallons fine verm
1 gal azomite (granular 1/8" pieces, not micronized)
1 gal granite fines
1 gal rock phosphate
my plan was to use 5 gallon pots in flood trays, maybe even use smart
pots if the evaporation doesn't cause the system too much water loss.
this medium is tailored to high CEC using different varieties of nutrient
rich clay, like azomite and rock phosphate. granite is rich in potassium,
but using rock nutrients lowers solubility and should prevent the fish
from being poisoned by excess nutrient drain off. one of my buddies
down south has been an aquarium guy for 20 years and he pulled off
aquaponic weed a few years back, but when we were going over the
pictures of his grow it seemed like the NPK balance was slightly off.
according to scientific literature, using rock phosphate in aquaculture
is supposed to enhance the nutrient content of the rock phosphate, i
guess it acts like a zeolite? absorbs nutrients and holds them, then the
plants can access as they need it.
system design would incorporate a primary growth and secondary growth
area with a sump tank between. water from the fish tank would go to the
primary bed first, be "filtered" by the plants/medium, then drain into the
sump tank. from the sump tank this "cleaned" water would go to the
secondary bed, which would contain plants in the finishing/flush stage.
i have a simple paint diagram drawn up, but RIU won't let me upload a file
for some reason. i click the button and nothing happens...