Infinity Edge pool construction - The Happy Ending
birdbath
15 years ago
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riesenschwimmer
15 years agosmbnobles
15 years agoRelated Discussions
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Comments (4)I don't believe it "standard" but it certainely doesn't hurt. Most people don't really run their negative edge pumps more than a couple of hours a day, unless they are having a party or something because the water running over the wall, and the pump operation consumes a lot of energy. Also neg edge troughs typically pull off bottom suctions to there isn't that much debris that ends up back in the pool....See Moreinfinity edge question
Comments (11)just-a-pb...thanks for clarifying. Makes sense now, on a bigger pool, say greater than 60K gallons, a second filter makes sense to help with the dirt load and turnovers with low speed pumps. There's just not enough hours in the day to turnover larger pools with low flow rates to save energy. For our modest 40K pool, I only need to run the circulation pump at low speed for about 18 hours during the swim season to take care of turnovers and filtering...no need for a second filter and pump. Our negative edge pump only runs for a couple hours per day during the weekdays and off-season and 5-10 hours per day during the swim season and weekends when we tend to swim for longer periods. I should have clarified my post also regarding returning diry water to the pool...this only happens for as long as it takes to carry the water held in the basin to the main pool...after that it's carrying clean and chlorinated water to the pool. Using your logic...one could also argue for a chlorine generator on the negative edge pump in addition to a filter to prevent dirty, unsanitized water from being returned to the pool....just my perspective for what it's worth. For larger pools, I agree with a second filter and pump to save energy during low speed circulating and filtering. If you have a negative edge pool, it makes perfect sense to put that filter on the negative edge circuit. I would also say that for larger pools, the placement of a secondary chlorine generator may also be needed and placing it on the negative edge circuit would also make sense. For smaller pools with a negative edge, like mine, the need for a second filter is not necessary and placing one on the negative edge circuit is overkill in my opinion. I can see the argument either way though....See MoreFinally a happy ending for after the fact pool lights
Comments (1)I love happy endings! That's a beautiful pool! Congrats on your new lights, you must love them....See Moreinfinity edge engineering and plumbing
Comments (15)The only compelling argument I've heard to have a separate filter for the negative edge is if the pool is large enough (>50K gallons) to require the use of 2 pumps to get adequate turns per day for chlorination and filtration at lower, more energy efficient speeds. Our pool is 35K gallons and only has 1 main filter..no filter for the infinity edge circuit. We have to run the main circulation pump for 20 hours per day in the summer to get adequate chlorination and filtration at low speed on our 2 speed pump. If our pool were larger, we would have likely added another filter and chlorinator and it would have been logical to add it to the infinity edge circuit. Another thing to keep in mind...the addition of another filter and chlorinator doubles the maintenance and replacement expense down the road in addition to initial installation expense. With only one filter, we've had no problems with the infinity edge pit water clarity or cleanliness...it gets turned over 10x per day using another 2 speed pump for the infinity edge which pulls water from the pit and provides water to our waterfalls as well as 4 returns in the main pool. Agree with the other posters....the engineering of the wall and plumbing is highly dependent on the specific design of each pool and how the pool sits on the site. Also, the sizing of the pit is critical along with the adjustment of the autofill level in the pit. Think of the pit as a surge tank with widely varying water levels throughout the day....tile the first 12" or so of the top of the pit rather than just 6" as is normal for the rest of the pool. This will allow the level of the pit to be adjusted lower via the autofill setting so that water loss out the overflow is minimized during surges. When surging is not happening, the extra 6" of tile will ensure the plaster is not exposed for long durations when splash out is not happening and the water level is lower. Surge levels can be minimized by making the pit larger and this is where each PB may differ on how the pits are sized in relation to the main pool area. The larger the main pool area, the larger the pit will have to be sized to accomodate splash out. Think of pit size in terms of inches of water lost from the main pool and resulting volume that ends up in the pit and you'll start to get an idea of how the two are related to each other. Lastly, surge level can be minimized by running the infinity edge pump at higher speeds. This will keep the water moving faster from the pit to the main pool when lots of splashing is occuring. Occasionally, we'll turn our infinity edge pump on high speed during parties when lots of jumping, diving and splashing is occuring. The additional people in the pool also displaces water from the main pool into the pit, so this should also be considered when sizing the pit. Also, remember that filters and chlorinators reduce efficiency of circuits, especially at higher pump speeds. This is another reason not to install a filter or chlorinator on the infinity edge circuit if high speed operation is expected. Some people like the sheeting of negative edges..especially when the water sheet is highly visible (like lakeside lots)...sheeting requires high pump speeds, so desired use of the infinity edge should also be considered in overall design. Our negative edge was primarily for the negative edge reflections and views and not so much the water sheet wow factor...your specific needs may vary. Hope this helps....See Moredonnawb
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