Tyler Ludens wrote:Our oldest rain tanks are over ten years old and seem in fine shape. These are the black polyethylene kind.
If I could have a pond, I would choose a pond over a cistern because the water storage per dollar is much greater. But ponds are typically much more expensive than tanks and may not provide the water in the most convenient location. Both pond and tank/cistern would be ideal.
By "pond" I mean a real earthen pond, not a lined pond. I have a small lined pond but feel larger lined ponds are not the best use of materials. Our little pond is for a very specific purpose - to provide permanent water for amphibians and songibirds which we manage for "Wildlife Management" tax status on the land.
Our tanks are for emergency water supplies and mostly have not been all that useful. I think we could have done with fewer of them, but I was obsessed with having them for awhile. They would not be sufficient to irrigate with in the event our well fails. Our neighbors have a 20,000 gallon rain tank and quickly run through it when irrigating.
Miles Flansburg wrote:Howdy Jim, Maybe I am not understanding but in my view they are used for two different things. Isn't a cistern used for storing household use water, Vs. a pond has many uses such as everything from water storage to swimming ?
My question is what is it that you will be using the water for?
Devin Lavign wrote:These are my thoughts on pond vs cistern for your application, other applications however might have give different results.
A cistern has the benefits of less evaporation issues, as well as less plant mater sucking up water from the store of water. Your not in a desert though so this might not be a huge issue.
Both cisterns and ponds tend to become breeding grounds for insects and possibly viruses. However a cistern tends to be the easier to manage these issues. While a pond it is more about mitigating than complete management.
A cistern can be an eye sore if just left above ground but if you opt for a buried one they can blend in. A pond however is typically an attractive element and a pond can add to the beauty of your place.
Both ponds and cisterns do need some upkeep. A cistern will need to be drained and cleaned occasionally as sediment builds up in the bottom. A pond will need a bit of plant life management as well as possible dredging of accumulated organic matter and sediment. Ponds however are hard to know what to expect, as they are dependent upon how you build it what goes into it and so many other factors. A pond could go for years with no maintenance, or it could take intense maintenance 2 times a year, or even every few months. It really depends a lot on the pond construction, the region, the wildlife, etc... A cistern would be the more predictable one. As well as the more instant option. As a pond will require more start up maintenance to get it going, while a cistern will pretty much be ready to go once built or installed.
Over all you might notice cisterns seem to win out for your application. I personally prefer a pond, which is why I bought land with a pond. However for what your talking about needing this water reserve for I would say opting for cisterns would likely be the best bang for your buck.
Now the big question might be build your own, or buy one? You can make simple concrete box cisterns pretty easy, both underground or above. Buying an cistern gives you the quick fix of getting it right away, and usually with the plumbing options ready to go.
Devin Lavign wrote:Glad my comment was helpful and got you looking in the right direction for your needs.
Yes there is a lot of stuff to learn in permaculture, I am in no way done learning myself.
wayne fajkus wrote:I bought mine new for that price probably 7 years ago. I think when oil went up, they went up. Now that oil is down, I was wondering if the price would go down.
Shipping is another problem. Probably 3 fits per 18 wheeler. That's gonna factor into the price..
It will sink if it sits on the ground, which may be why they want flex joints. I think I had that happen to me with hard elbows out the bottom.