I am not talking about the vinyl-lined kind with sand underneath the
liner. I have an ordinary in-ground concrete pool in the back yard.
The problem is it is too deep for babies. My sister had the same
problem, plus her pool was cracked and needed repair. She opted to
take out her pool.
Mine is in good shape, and I am not yet willing to take it out. Since
the bottom drain apparently does not work, and has not worked for ages,
I have the idea of partially filling the pool with sand -- a whole lot
of sand -- until the water is about a foot deep. This will not block
the water circulation as the working water inlet and outlets are both
near the surface. I would have wanted to filled it completely with
sand to make it a big sand box, but I think I need the layer of water
there to deter cats. As the babies grow up, I will scoop out some sand
and make the pool deeper.
A google search reveals that sand bottom pools do exist, but they are
most often found in resorts and parks. My question is does this kind
of thing exists in people's back yard? Will it be a problem to keep
clean and sanitary?
it would be a fortune in sand. also, it would be extremely hard to keep it
out of the filtering system, and the abrasiveness of it would eat your pump
and clog the filter quickly. since the water will percolate down into the
sand bed, how do you propose filtering that water?
;it would be a fortune in sand. also, it would be extremely hard to keep it
:out of the filtering system, and the abrasiveness of it would eat your pump
;and clog the filter quickly. since the water will percolate down into the
:sand bed, how do you propose filtering that water?
I would imagine sand to be one of the cheapest bulk material I can
buy. I figure all I should be paying for is the handling and storage,
which should be low if bought by truck loads. As for sand getting into
water filtration system, if sand is found sitting on the bottom of a
flowing stream, I figure most of it should pretty much stay put at the
bottom of a stagnant pool. I am more concerned about how to keep
nasties from growing in the sand, and whether there will be problem
cleaning leaves out from the bottom of the pool. Wouldn't swimming
pool chlorine diffuse into the the sand for as far as it matters?
sand has fines. movement of sand produces more fines. with a filtration
system, it won't be stagnant. you'll have to have some water movement
somewhere. sand in streams is replenished from upstream and migrates
actually, probably not that much, but some. for example, it's been found
that 6" of sand in the bottom of a saltwater marine tank has almost no water
diffusion at the bottom of the sand, causing anaerobic processes to occur.
lots of people depend upon the fact that there's not very much water
diffusion for natural filtration to occur in tanks with sand beds.
you're talking about 6-8' of sand? probably no water diffusion at all, once
the original water gets down there. you'd have to put some sort of barrier
platform that would hold up the sand, with tubes through the sand down under
the barrier and pump the water down there. dags reverse undergravel
I'd leave it and sign your kid up for swimming lessons as early as
possible. Around here they advertise for 2 year olds.
until then, keep him inside, or put a fence around it.
On 9 Nov 2004 11:24:58 -0800, firstname.lastname@example.org (Wen-King Su) wrote:
build a fence around your pool and a lock on the gate. this should be
city code anyhow. supervise the kiddies in the pool. if you fill your
pool with sand without proper sterilization (UV) and a very large
filtration system you will acheive a breeding ground for bacteria -
which will quickly send anyone who swims in it to the local emergency
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