zigbee???

Some manufacuterer who makes cheap covers that only last a year will begin labeling them as being "green" -- "biodegrades within a couple of years, good for the environment!"

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Well, now, you are an engineer, aren't you? So that should be fixable, turned into a James Bond feature.

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Pools have to be inside a locked fence around here.

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That's faster than BS has moved, in years. :(

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Inground pools do pretty much everywhere. That doesn't remove all liability, though. Remember Joerg is in Kalifornia.

"Floating cover"? We had a "solar blanket" (heavy duty packing material) for about ten years. It wasn't used every day, though. We went through three Winter covers in that ten years. One only lasted a year; cheap crap. The last one held up pretty well.

Chlorene isn't intended to kill algae (bacteria). Use an algaecide for that.

Causes global warming, I know...

Yeah, that would be something. Timer -> the year is up -> pool cover vanishes in front of your eyes :-)

Even if it kills ten more?

Kenya is one of the more enlightened African countries. As I said, my brother's issue wasn't with the Kenyian government or with their people.

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I think that's what ours was called. Looked like blue bubble wrap. When it lost its "blueishness" it began to flake stuff into the pool.

Yeah, we use one like that. Or, rather, we use one of those every 2-3 years... that's about all they're good for, in practice. The "warranty" is for five years, but it's voided if you expose them to more than about 1 PPM of chlorine in the pool water. I considered switching to one of the non-chlorine systems to preserve the cover, but the most popular one (Bacquil) isn't compatible with roof-mounted solar pool heating systems as it'll generate massive amounts of foaming and bubbline.

The guy at the store recently admitted that nobody gets five years out of these things, because you can't keep a pool properly and consistently sanitized with such a low free-chlorine level. This seems to be especially true at the higher water temperatures that these covers are intended to provide... we run our pool near the cover's rated upper temperature limit of 90 F (my wife likes to swim in soup... it's so warm I start overheating if I swim fast laps).

I just consider the cost of the covers to be part of the ongoing expense of operating the pool. They add a couple of months a year to the swimming season.

The "timer" is otherwise known as a "warranty".

It's against the law to breath in Kalifornia, and Kalifornia is known to cause cancer in every living thing. :(

Kalifornia is just the furthest down the sewer. All are in the same sewer, some closer than others.

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We had ours for ten years. Sold it with the house. Of course it only got three months per year of use, but it was never put "away". It lived, folded up (no roller) under the back porch.

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Our help? It never did that. But it does help give people with HIV over there purpose and later a dignified death, not somewhere alone in the streets.

Hmm, mine too. Maybe all women are the same in that respect.

We gave up on it. Too messy. Plus we have high winds.

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Your charity isn't in a place where people don't have even the basics for life. The point is that there are places that helping a little can do more long-term harm than none at all. That's where the ethical issues come into play.

If condoms, for instance, allow the sexual lifestyles continue unaltered, is that a good thing? ...even if it saves one person's life? There are tough ethical choices. We tend to not be so good at seeing unintended consequences, either (and worse, liberals ignore the them even after they become obvious).

SPELL CHECK! It's spelled "Kalifornica", with major fairy city of "San Fransicko". ...Jim Thompson