Open system

[kingkong]

Quote: Originally Posted by luke frisbee KK, if a rambler ain't a car can you post a pic of one?

I am working on it. It was long and skinny maybe rainbow something. Here is a fish that was plentiful.... Jordanella floridae - flag fish.

[JasPR]

who ever said that all source water is suspect is right in my opinion. Even good well water can be low in oxygen, high in carbon dioxide or nitrogen.
Mike is right in that the line between closed, semi open and open is difficult to define. But if I tried to express it, I'd say that if the pond water is identifical to the parameters of the source water in temperature, hardness, PH, alkaline reserve, ammonia, nitrate and oxygen levels-- you have an open system. If your water is close to the paramters of your source water but significantly lower or higher in parameters than when you pond is cut off from a fresh water source, you have a semi open system. And the degree of 'openess' is going to be gauged by how close your parameters are to the source water vs when you run the pond as closed system.
There is another line, and that is where water changes are so close to one another in time intervals that the base parameter readings never drift too far from source water and thus 'mimic' a semi open system. JR

[luke frisbee]

Quote: Originally Posted by kingkong I am working on it. It was long and skinny maybe rainbow something. Here is a fish that was plentiful.... Jordanella floridae - flag fish.

Those I've had...I want me a rambler

[kingkong]

This will help you ramble.

[kingkong]

[quote=JasPR;107908]who ever said that all source water is suspect is right in my opinion.


We got the best water anywhere....I fill my own drinking bottles daily staight out of the ground. If it is good enough for me, it is good enough for a carp.

[luke frisbee]

while fish, those are not ramblers neither...but were probably shaped when Ramblers were made

[Eugeneg]

[quote=kingkong;107940]

Quote: Originally Posted by JasPR who ever said that all source water is suspect is right in my opinion. We got the best water anywhere....I fill my own drinking bottles daily staight out of the ground. If it is good enough for me, it is good enough for a carp.

That is not so unless you had the water checked . Some might be good for fish but not good for man and vice versa . eg ph for fish and eclolie for man both can kill
Regards
Eugene

[kingkong]

By the time I got the results of a water test done I would be dead if the water was toxic. I actually use a canary of sorts, Cardinal tetras. I have a tank full, they are very fragile,and I do water changes often....75%. I watch them like a hawk. If the well water goes south I will know within a couple of days. Much better than a couple of weeks (lab).

Luke, I got my book out. I didn't take any pictures when I was a teenager at least not of fish but the name Rivulus sure rings a bell so another species of killifish perhaps. But since invalid names abound we gave it our own name, after all we found it....rainbow rambler. Now that is a heck of allot better that rivulus. It was hard to catch.

[Fishbreeder]

We had a 1961 Rambler Station Wagon when I was a kid. It made funny noises so my dad took it to the dealership and they said it was fine. We went out on the freeway and drove for 110 MPH for a ways then went back to the dealership with the engine smoking. They wanted to know why we didn;t come in sooner! That year was the introduction of the "all aluminum engine". Didn;t work then, nor for the Corvair, or for the Vega.

All my fish holding facility is 100% flow through. Exchange rates from once every fifteen minutes to once per hour or so. So, from 2400% to 4800% water exchange daily.

This is the otptimum situation for holding fish, parasites and other pathogens are flushed rather than recycled with the water.

But, the cardinal rule still applies, to a much greater extent than in closed systems. The golden rule is, "Know thy source water."

Mine is a 30 acre lake. The huge volume makes for a very steady, constant supply of water that never changes much in its chemistry. It changes some in clarity, muddy on windy days, but there is no ammonia, nitrite, nitrate, carbon dioxide, or other metabolites in it. pH is a constant 8.2, hardness and alkalinity change some with rainfall, but always from 80 to 150 ppm each.

I can and do recycle most of my water by pumping it to the big lake. There it is filtered through aquatic plants as well as the natural cycles of the lake, Also, dilution is high, the lake holds over 100 million gallons of water. By recycle, I mean taking pond water that is drained (millions of gallons) and placing it back into the lake to be used again and again.

While I live in a water rich area, good water is still hard to come by and needs to be conserved.

I do run one tank of filtered water (in the backyard sense) biut tiwh a constant flow through of about 50% per day. That tank stays clear even when the lake gets muddy.

As I move to the future, I will be putting in more and more filtered tanks to try and cut down on my consumptive use of water, which is becoming more and more costly. However, I'll still be changing a minimu of 100% a day.

Brett

[kingkong]

Just talked to a guy that helped install marine tank displays at Paradise Island Atlantis and they are flow thru open systems.