| ok, i see what yor thinking, itll work fine. im used to adhering to our rules we have over here and design off that.
we arent allowed to just run our water to waste or the environment. carp is a nasty word around here in the way they might get out and establish wild populations and compete with natives.
we once had a big flowing river thats not so big or flowing anymore and all that survives well in it is carp so theyve blamed the carp for its demise when i reckon its been screwed first and the carp can survive those conditions.
things like slower water flows from huge agricultural use..logging, desnagging, building weirs and dams.. thats the main reasons its not supporting natives anymore..basically the farmers say its the carp thats the problem.. i spose that cause thats whats there now in the upper reaches..
meanwhile they suck that much water from it for irrigation that its changed how the river used to be. they say the carp dig up the banks.. though they thought nothing off loggin right up to the river edge and have the livestock and elements erode it. carps the Escape goat. i think if the flows were still there and the temps unnafected then the natives could still breed.
some states wont allow koi at all, those that do, stopped importation of more.
anyway what im getting at is if you can build it like that then 16 ponds like thatll surely give you enough fish to think about with just one or two breedings per season..seems youll get enough fish out for cheaper than what we can with our licensing rules we have.
have you got your eye on a bait market for your cullers?
i dont know if koi are used over ther for bait.
we got rules that dont allow it, in case they get off the hook, not even in salt where they would perish..
weve got such strict rules that wouldnt allow what you plan on doing.
does your farm even have to come under a licensing process over there?
if we want to sell then we have to be licensed..when planning the proposal
some of the restraints are :
ponds be 500m from waterways.including the required effluent pond 2 x our largest culture pond.
all screens 1mm mesh. all ponds predatory netted. no water to escape to environment. all runnoff to be excluded from entering ponds.
all ponds have a 30cm freeboard and have overflow provisions in case of heavy rain and escape.
all ponds to be fully gravity drainable to the effluent pond.
ie we cant rely on electricity if we have it on site even. which is a bit overboard i reckon, licensing police..they turn up once a year top check on such things and if we break a rule we can end up in the environmental court and have our license pulled.
oh yeah and the one that makes me envious of all you guys...
no koi to be imported from overseas.. ie we must use what came from japan 25 years ago. so we miss out too on any breeding gains theyve made in those years. why? well im not sure, i mean they havent eradicated all pet koi, you can have them. theyre everywhere legally, nothin really stops uneducated kids letting them go into the wild..but even new ones that people might pay big bucks to import.. sorry can not do.
its not due to the carp pox i think that concern came later.
we can bring in many different fish from overseas so long as they get quarrantined for 3 weeks.. i see some of those fish and ill tell you they still get through to the shops covered in health problems.
i dont see whats wrong with importing some top breeders that undergo proper quarrantine to improve our genetic.
i think they tried to bann them from here all together until the koi society kicked up a stink and pointed out that their fish atleast pose no great environmental threat.
oh back to your farm.
bird netting is definately the go, i thought you were short on cash for that but itll pay you back.
you shouldnt get stratification with the blower or paddlewheels. not if your using air lifts like mentioned before, id use pvc pipe anchored on the bottom with a brick with a hinge and have the air line bubbling at a suitable depth within it and itll extract from the bottom cause it has to.
i think youll find that the majority of the bait growers with koi or goldies use commercial feeds within a week or so to supplement the live feeds.
without that they dont get the yeilds or stocking and growth rates.
and yep when you do come to pump em out you want it all to move to the pump, you can dry and lime the high end and treat any wet sump with some hydrated lime. i spose that maybe why the fisheries here make for em completely drainable so they can dry out completely without mucking round with a pump.
best luck and keep the pictures coming. |