when you say outside is it in a shed or conservatory etc.? With the DIY option it depends on your experience with mains electrics and where you are locating the switches, for instance if your switchboard is in an enclosure or shed then you could use other switch options that are a lot cheaper than outside waterproof boxes a couple of 4 or 3 way MK switch pattress may do the job depending on the amperage you are switching.
Still may be a problem then eventually with the size of pond, one thing I do know is there were no new plants or anything put in the holding pond other than the koi and the one goldfish for over 12 months whilst the bigger pond was being built so they must be hybrids that is the only other logical explanation.
I am thinking of getting an air stone and compressor to increase the amount of small molecule air in the pond, I already have a large waterfall shifting about 1000 litres of water every few minutes which has sufficed, the agitation at the base of the waterfall is quite aggressive and the koi love hovering under it I have about 7 large koi now between 24? and 30?.
Obviously I would like to make their life as great as possible and I heard especially in deep ponds that an air stone is an asset and improves air efficiency to the lower parts of the pond is this true and what would you recommend? The pond is over 4 foot deep with a 2 foot shelf on one side.
Thanks for your help.
Fishlady wrote: Two possibilities: the young are goldfish/koi hybrids (most likely as goldfish and koi interbreed very easily) or alternatively if you added any plants to the pond that came from a stocked pond elsewhere it's possible that there were fertile goldfish eggs on them. 99.9% likely that this is just a simple goldfish/koi spawning and the babies are hybrids.
Common goldfish can reach 18 inches/10lbs in the right environment. Koi/Goldfish hybrids anywhere up to the max for a pure Koi.
Hi in respect of the babies not saying you are wrong but I am trying to understand what has happened, about 10 of the baby fish are white with red/orange spots and growing very fast, the eggs were noticed after i moved 6 large Koi and one goldfish from the pond to their new home, i thought it takes two to tango is there any way a koi can fertilize goldfish or vice verse? if not then i have no idea what has happened here?
as for the large black fish in the other picture it is over a foot long closer to 14" are you saying that this is a goldfish too? it was mainly the large black fish I was interested in?
Also do goldfish change color from black when they are babies?
CB3100 wrote: Sadly the babies are not koi they are goldfish. They are not worth anything really but you may be able to offer them for rehome on Facebook pages and such.
If you are correct then it is a bit of a relief actually as they won?t grow as big as the other 2 foot Koi in the pond consuming and stretching tons of resources from the pond itself, I also have friends that would take goldfish on but not so much koi.
OK; I will :) another point I forgot is the baby koi were raised in there from fry over the last 18 months because as you know the bigger koi can be cannibals, the babies are now in the big pond being 2"+ and right the way through they have thrived well, that is partly why all the tests were done as i could not believe how stable or waterproof it really was being concrete.
Now I have a ton of fish that i will need to sell off or give away at some point.
There are a few problems with that Post! It has been used as a pond for 70 years that I know of! The PH has remained consistent over the last 3 years along with other various tests so there is absolutely no impact whatsoever on the water condition.
actually it is the most stable and clear pond I have ever come across that is why I was so curios in the first place being concrete, it has a load of silt in it now primarily not being cleaned out for over 30 years and maybe from the roof but I think 30 years is good going without a clean out!
I think Your valid point in the post was the outlet pipe and I agree; the fact that it has never happened does not necessarily say that it will not but this is easily remedied with a grill of some description.
the new pond is huge in comparison and will cascade into the old pond there is a large circular water feature going in the old pond ?dipping pool? but some really small fish may find their way in there via the cascade if they do they will remain safe.
Could you explain exactly what is wrong with rain water?
The large pond receives gallons of rainwater over its surface in heavy falls and the piece of gutter that services this pond is off a small section of the roof, not all of it! So in a heavy fall it replaces about 10-15% maximum of the water in the dipping pool / Pond!
when testing there is no real radical difference to the pond at all with the % of rainwater.
2010 wrote: As I said earlier it will be interesting to see what it looks like when empty..............................