Re: Flow through fry boxes

[Ken Simolo <Simolo at chem_chem.rochester.edu>]

Hi Lee,

Any style of needle valve always changed flow with time as it slowly 
clogged from my well water.  Now, I use flag-style drip emitters to 
create a back pressure which evens out the flow for tanks on the same 
level.  I do not remember if they make it equal for different tank 
rack shelves but if not equal they certainly make it close.    You 
can get them at different flow rates so you can have your 5 and 10 
gallon tanks on the same run but still get the same % water change on 
each (for example: use 1 gph on 2.5 gallon, 2 gph on 5 gallon, 4 gph 
on 10 gallon).  They are cheap (<$0.10 each from on-line sites) and 
have not clogged in 3 years of use on my well water (if they do, the 
style I use quickly disassemble to clean).

Thanks again for the nice talk at the NFKA show last year!

Ken








>     The drain system looks fine for what I am planning. However, in my
> current distribution of incoming water, I have a problem getting the same
> delivery rate to each tank (now all fives or tens). I would expect that to be
> just as difficult with fry boxes and perhaps more critical. I am using tap
> water pressure and slow flow rates for delivery of once through water -- not
> recirculation. Any suggestions -- Barry or others?
>     Incidentally, but very gratifying, I have observed significantly
> increased egg production and fry survival in the tanks with the once through
> system after just a few months trial and that is with only about an hour a
> day turned on.
>
> Lee Harper
> Media, PA
> USA
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