From: Mike Monett on 6 Jul 2006 15:12
Sergey Kubushin <ksi(a)koi8.net> wrote:
> I haven't seen a trace of algae when this thing were working. And I
> even wasn't that hard on chemicals. Now, when it's dead for something
> like 2 months, I have a substantial algae growth, with green spots on
> pool wals that I can't even remove despite weekly chlorine "shock"
> treatments, heavy algaecide usage and lot of other efforts.
> Yes, I do know ozone is unstable. But injecting ozone in the pool
> water for a couple of weeks gets rid of that nasty vegetation. I had
> not read it in advertizements, I can clearly see it in my own
As you mentioned earlier, you are pumping the water through the ozone
injector. This kills bacteria and algae that come in direct contact with
the ozone. No problem with that. It obviously works.
I just took exception to your statement there was ozone in the water, and
explained why that was not true. The half-life of ozone in water is very
short, and it decreases with temperature.
From: Sergey Kubushin on 6 Jul 2006 16:10
Mike Monett <No(a)email.adr> wrote:
> Sergey Kubushin <ksi(a)koi8.net> wrote:
>> I haven't seen a trace of algae when this thing were working. And I
>> even wasn't that hard on chemicals. Now, when it's dead for something
>> like 2 months, I have a substantial algae growth, with green spots on
>> pool wals that I can't even remove despite weekly chlorine "shock"
>> treatments, heavy algaecide usage and lot of other efforts.
>> Yes, I do know ozone is unstable. But injecting ozone in the pool
>> water for a couple of weeks gets rid of that nasty vegetation. I had
>> not read it in advertizements, I can clearly see it in my own
> As you mentioned earlier, you are pumping the water through the ozone
> injector. This kills bacteria and algae that come in direct contact with
> the ozone. No problem with that. It obviously works.
Sure. But it also takes water a fraction of second to go past that injector
into the pool. That means most of ozone does make it into the pool itself
where it becomes oxygen and atomic oxigen that is extremely strong oxydizer.
It not only kills algae, bacteria and viruses; it also cleans water of
various organic contaminations.
> I just took exception to your statement there was ozone in the water, and
> explained why that was not true. The half-life of ozone in water is very
> short, and it decreases with temperature.
Yeah, I didn't mean that pool's water is saturated with bubbling O3, I meant
it reaches some equilibrium where that constant sip of ozone is enough to
sustain it clean of further contamination. That's also how chlorine works in
the pool--you put a tablet in a floating chlorinator and it slowly releases
it into the water.
And unlike drinking water that is running water, pool is a big pond where
the same water stays all the time. It constantly circulates through the
filter, gets ozone etc. So one does _NOT_ have to pump lots of ozone to
instantly kill everything alive in the water. It's OK to put just enough
to kill those microorganisms faster than they multiply. Even a little bit
faster. There is no rush, it may take several weeks until pool environment
stabilises, that's OK. It's a long process to get the pool properly
BTW, that ozone does not exclude chlorine usage. It just reduces it. And
they work very well together. One should've had to use so much chlorine to
kill algae that it would've been impossible to get near the pool without a
gas mask. And ozone alone can not kill everything, those ozone generators
are not powerful enough.
* KSI(a)home KOI8 Net < > The impossible we do immediately. *
* Las Vegas NV, USA < > Miracles require 24-hour notice. *
From: Chris Jones on 6 Jul 2006 20:30
Sergey Kubushin wrote:
> ...Another problem is that its powered with 220V, not
> regular 120V. There are some 277V ballasts at Home Depot, will they work
> on 220V? Do those T5 germicidal bulb filaments work at the same voltage as
> T8 and T12, i.e. can I use e.g. T12 Rapid Start Ballast?
If it is hard to get 220V ballasts in the US then I would suggest getting
some ballasts from a European E-bay seller or something like that. There
are some German guys selling lots of interesting lighting equipment. As
far as I know, the fluorescent tubes are the same, just the ballasts are
different for 220V-240V countries and 120V countries. Perhaps someone else
could confirm or deny this.
From: Genome on 7 Jul 2006 10:40
"Sergey Kubushin" <ksi(a)koi8.net> wrote in message
> UV lamps don't make ozone in liquid water. You've never seen a pool, have
> Ozonator is a simple closed box with one or more ozone producing bulbs. It
> has a hole at one end where it takes air and a fitting with a pipe on the
> opposite end. Something (pool pump, venturi injector etc.) sucks air
> that pipe and injects it into water flow. So when pump is on it makes air
> flow through the ozonator and to the water. Ozonator is connected in
> parallel with the pump. Two 30" 40W High Ozone bulbs generate something
> 2-3 grams of ozone per hour. Pump runs for approximately half a day every
> day. That is enough to prevent algae growth. It does really work and two
> months without ozone make it flourish despite intensive chlorine treatment
> and lots of algaecides.
If I understand your discription correctly then you might try this as a
Go and buy one of those carbon fiber brushes that they sell for cleaning
dust off vinyl records, I'm sure they still make them. Make sure it is one
with a metal body.
Build a box around it using balsa wood and attach some of that aluminium
mesh that is used to repair holes in car body work. Build something like a
10 stage Cockroft-Walton multiplier using 1N4007 diodes and 10uF/400V
electrolytic capacitors. Connect its output between the metal body of the
brush and the aluminium mesh and plug the other end into your 220VAC supply.
Presto, your own ozone generator. I built one once and accidently left it
running in by bedroom overnight. When I woke up the next morning the room
stank of ozone and I had swollen eylids. Wicked.
From: Zak on 7 Jul 2006 16:55
Mike Monett wrote:
> However, I was under the impression that UV was not a very efficient method
> of making ozone, especially considering it has to make enough to treat an
> entire pool.
And AFAIK ozone and water turns into hydrogen peroxide - H2O2. Which you
could just add to the water.