watercress is a very valuable human food, not especially common in the USA.
I understand that tilapia like water around 90F good for some areas, not for others.
I have seen that people also grow tilapia in barrels. I have never eaten tilapia but will try them soon,
I expect I will like them.
I like crayfish, crawdads, mudbugs, fresh water lobster, they like cool water.
Better in a small pond than a barrel.
a year round fish growing project might want to rotate fish for the season.
tilapia are easy to grow.
and imo... if you can grow one fish, you can grow any kind of fish...
like mushrooms, they are all the same, just different parameters are required... nothing is hard
or complicated about it. Make the environment and they will grow healthy.
the temperature ranges a specific fish prefers has its degrees of growth within that range
along with its spawning temps.
Usually the warmer the water(with respect to what the fish PREFERS) the faster the
growth rate, fish are cold blooded(minus the recent discovered warmed blooded fish that is monstrous)
So when they are warmer, the bacteria within them is more active, allowing their metabolism to work
more quickly and effectively, this is why you'll see fish "sunning" or usually crowd around a warm spot/source
Tilapia is a very mild flavor fish, really flakey and just damn over all GOOD FISH.
My personal favorite is yellow perch and walleye, talk about amazing FLAVOR!! lol I think the
walleye tastes the best. Talking fresh water now :P
in an aquaponic setup, the temperatures between FISH WATER and PLANT WATER
have to be kept in mind.
not everyone agrees on temps for plant water, so i just go by whats COMFY to my wrist.
If its COLD to my wrist, its probably to chilly for the microbes.
You wanna keep the microbes in mind the most. they are the workers, without them... everything
gets all jacked up way to fast.
I like my plant root temps to be around 65-75, any lower and microbes really slow down
and any hotter the plant roots might not like it so much.. of course there are exceptions.. lol
dare I forget to ever mention that :P
(tilapia LOVE higher temps, they can handle 80s no problem, but youd want to consider
dropping those temps a tad when they enter your grow beds, this is a good spots to start
with towers in your system, this will drop water temps a lot as the water falls, evaporative cooling)
Now for the fish.. well.. it would benefit to grow a fish that likes the same temperatures as
your plant roots and microbes.
MOST fish will grow in these paremeters btw...
but its possible to get a lil fancy with things and design plumbing in such a fashion
to take into consideration you want the water temp to drop a lil bit before entering grow beds.
BUT.. what some people might do that others might not do because of well.. laziness IMO...
is the COLD shocking and CLEANSING of the of the fish before you fillet them.
this is the stage when you harvest all mature fish and put them in a separate tank with
cooler water then where they grew out at.
what this does, is signals to the fish that seasons are changing and they will produce
a little more fat, this is HEALTHY FAT btw.. ever hear of "FISH OIL" ?? got the omegas and what not.
You dont feed the fish during this time, you allow them to clean themselves out, you can keep that
waste in the system then, rather then composting it later.
im interested though, if this stage adds a few grams more weight to the fillets.
Edited by Il19z8rn4li1, 29 October 2015 - 12:53 PM.