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Old 04-15-2012, 06:47 PM
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water loss

how much water loss is normal on a little 70-100gal feature per day? I've checked everything and cant find water anywhere, so I'm thinking its evaporation and or sandstone soaking it up.
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Old 04-16-2012, 12:27 AM
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Letting us know where you are at will help. in Boston evaporation is playing little effect right now, if you are in a 100+ degree desert, then evaporation plays a large role. Also what is the surface area? Is the water deep with a small surface area, or is the water shallow with a large surface area?
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Old 04-16-2012, 08:33 AM
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Sorry Green,
most people know im from Ohio. little surface area. Its a small pondless. and losing 1.5-2.5gallons a day.
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Old 04-16-2012, 10:02 AM
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How much splash does it give off Bruce? 2 gallons on average sounds about right for a small pondless. Why are you questioning the water loss? I mean are you refilling every couple day's?

Just to be sure go back to the basics and check your edges etc. There has been a few times that "No way it's the side edges" and sure enough it was a low edge just sipping water out.
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Old 04-16-2012, 01:38 PM
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Lots of factors to consider, Bruce. If all possibilities of leaks have been ruled out, then evaporation is the likely cause. General evaporation rates will vary from day to day depending on many factors: air temperature, wind, sunny or overcast, total exposed water surface area. In the case of many water features, total aquatic plantings will factor in.
In my area, the average pan evaporation rate per day is .24 inches. This equates to about 0.15 gallons of water loss per square foot or 1 gallon of water loss per 6.67 square feet of water surface area WITHOUT ANY PLANTS.
Considering that plants are in active growth this time of year, their water demand will be high.
My personal pond, which is heavily planted, commonly loses 1" - 2" per day this time of year.
Keep in mind that water loss in a small feature will be more noticeable than in a larger one.
If the rate of loss is fairly consistent, it is most likely a leak; if it varies as ambient weather conditions change, it is evaporation.
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Old 04-16-2012, 08:22 PM
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no splash Keith its the one on my facebook page. yes refilling every couple days because a couple inches shows up to well on this small of a feature. i found after the first day a small seepage and that was it, slowed way down. I really think its evaporation , but I want to be sure. I check along the whole edge(s).
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Old 04-24-2012, 07:07 PM
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Quote:
Originally Posted by tadpole View Post
Lots of factors to consider, Bruce. If all possibilities of leaks have been ruled out, then evaporation is the likely cause. General evaporation rates will vary from day to day depending on many factors: air temperature, wind, sunny or overcast, total exposed water surface area. In the case of many water features, total aquatic plantings will factor in.
In my area, the average pan evaporation rate per day is .24 inches. This equates to about 0.15 gallons of water loss per square foot or 1 gallon of water loss per 6.67 square feet of water surface area WITHOUT ANY PLANTS.
Considering that plants are in active growth this time of year, their water demand will be high.
My personal pond, which is heavily planted, commonly loses 1" - 2" per day this time of year.
Keep in mind that water loss in a small feature will be more noticeable than in a larger one.
If the rate of loss is fairly consistent, it is most likely a leak; if it varies as ambient weather conditions change, it is evaporation.
http://www.leaktools.com/professional/evaporation.php
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Old 04-24-2012, 08:26 PM
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Great link, Jim. Handy calculator to have. Evaporation rates are never truly accurate because by the time you do the calculations, the conditions have changed, but, like they say: "It's good enough for government work".

http://www.usda.gov/oce/weather/pubs/Weekly/Wwcb/
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Old 05-10-2012, 10:20 PM
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here are a few view worthy vids on leaks and troubleshooting.

hope nobody gets upset






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Old 05-10-2012, 10:56 PM
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Why should anyone get upset? Actually pretty good videos.

I do hope that the 'Errand Boys' at least cleaned this customer's pond while they were on-site.
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