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Re: Flow system guestion about flow monitors



I sure wish you could find the time, to post pictures and a parts list.   I
started one of these projects, but unfortunately, off season for the drip
irrigation products.
About all I could find in the stores was the hose and a few connectors.
Very frustrating to know what you want and can't find a sales clerk who has
the foggiest idea what they sell.

Simple is always best -  if you have something that works,
I'm sure that everyone would be grateful --
The little things, like the leaking connectors, or a minor overlooked
factor, can drive you up the walls.
The expensive, complicated gadgets, look good, but usually generate more
problems than they solve.

Please share!

Larry


----- Original Message -----
From: "Ken Simolo" <Simolo at chem_chem.rochester.edu>
To: <KillieTalk at AKA_Org>
Sent: Tuesday, January 21, 2003 7:35 AM
Subject: Re: Flow system guestion about flow monitors


> Hi Lee,
>
> I use an automated once through water system.  I first tried drip
> irrigation tubing, etc. but these leaked slowly around the fittings
> which might be okay in a greenhouse but I find this unacceptable for
> my fish room.  Therefore, I switched to PVC plumbing pipe tapped for
> threaded hose barb fittings.  To these barbs, I connected a short
> piece of airline tubing with a "flag-style" drip emitter on the other
> end.  I connected another piece of airline to the output end of the
> drip emitter and run this to the tank.  For the tank connection, I
> drilled the plastic rim of the tank and inserted a small piece of
> rigid airline tubing.  This setup works well.  The emitters are very
> inexpensive (pennies each) and are available for different flow rates
> ( 1/2, 1, 2, and 4 gallons per hour) so you can have different size
> tanks on the same manifold system by using the appropriate sized
> emitter.  The emitters are small and can be disassembled for cleaning
> - I have not had to do this in 2 years even though I have very hard
> water well water.  Since I was getting bacteria, etc. growing in my
> earlier manifolds which might have eventually clogged the emitters
> when it sloughed off, I am using a UV lamp on the supply water only
> which has prevented this growth.  I do remove chlorine with charcoal
> but I raise the water temperature by using a temperature mixing valve
> to mix in a small amount of hot water.  Irrigation solenoid valves
> can be used to turn on each manifold of tanks (I use several
> manifolds, one after the other, so as to not overload the drain by
> having all of the 100+ tanks draining at once).  This system has been
> a life saver since I can not find the time to do water changes on
> this many tanks.  You still must occasionally siphon the bottoms of
> the tanks and clean the filters.
>
> By the way, silicone tubing does not work with this system since it
> expands when under my system's back pressure and can pop off.  I use
> a vinyl airline tubing which claims to be thicker-walled than normal
> vinyl airline tubing.  I also use inexpensive hose pinch clamps to
> isolate (shut off) individual emitters/tanks from the main system.  I
> have drilled my tanks for an overflow which is a threaded elbow hose
> fitting with a large-pore articulated foam insert to keep fry, etc.
> from leaving via the drain.
>
> The only problem I have had with this system is that an occasional
> emitter or hose connection leaks, usually right after installation.
> In these situations, I just replace the offending part.  The leakers
> appear to be due to poor quality control since I have had no leaks
> from some flow-rate emitters while other flow-rates have had as much
> as 10% leakers (which admittedly is not too hard to deal with).
>
> One of these days, I plan on putting up on a web site the part
> numbers/suppliers for the components and pictures of the parts and
> assembled system.  But do not hold your breath until I get a few
> other volunteer projects completed.
>
> Ken
> Rochester, NY
>
>
> >------------------------------
> >
> >Date: Mon, 20 Jan 2003 17:00:28 EST
> >From: LeeH920226 at aol_com
> >Subject: Flow system guestion about flow monitors
> >
> >I have an idea that is beyond just a concept. I have constructed a
prototype
> >once through water supply system that takes tap water, removes the
chlorine
> >via a carbon filter and distributes by means of a manifold to several
tanks
> >(I am at 12 five gallon tanks now and expanding). The overflow goes out
> >through holes drilled in the tank sides with a screen to keep the fish
from
> >leaving and into a drain manifold to a discard water sump. In the winter
I
> >recognized immediately that I needed to warm the tap water (50 degrees)
to at
> >least 70 degrees. I accomplished this somewhat by immersing about 30 feet
of
> >coiled tubing in my 55 gallon drum which is heated to 78 degrees. This
drum
> >is where I have been "conditioning" water before using it to manually
replace
> >water. From there the tubing goes to the manifold. This works OK at low
flow
> >rates, which is where I want it to be. However I know of no cheap flow
> >monitor that will give me a rough measure of flow rate except the ones
used
> >in chemistry setups where condenser cooling water is monitored. However,
> >anything from a laboratory supply house is exorbitantly priced. See
> >http://www.kimble-kontes.com/html/pg-626250.html for an example.
> >Barry Cooper has suggested that a flow monitor would also be useful for
each
> >tank supply. I can estimate that, if necessary, by arranging a drip entry
to
> >each tank above the water surface. Any suggestions by way of drip
irrigation
> >supply places or wherever?
> >
> >Lee Harper
> >Media, PA
> >USA
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