[Killietalk] Pump for recirculation system

["Earl Blewett" <micro at earlblewett_net>]

Dear FishFolk,

I am re-building my fishroom and have all the parts for a fully automated
flow through system. However, the Tulsa water is fairly hard 80 - 120 ppm.
For some of my fish I cut it 50% with DI water and I also like to have salt
in my water. I keep nothos and I like the longevity it gives to bbs. I can
set things up as a semi-automated system as I have filters as well as DI and
carbon cartridges to change my tapwater into reasonable water good water. 

I am looking for advice on two things:

1.  A pump for a recirculation system one that I can valve down to 15 psi
for my drip valves. The head would be about 6-7 feet.

2.   Some kind of timed drip system that I merge with my incoming water to
add salt (or saline) at a measured amount to reach 1/2 - 1 teaspoon per
gallon. 

3. Any way to merge pure DI water with the automated system. I bought a $30
automated timer and an inline heater to bring my tapwater up reasonable
conditions. 


I may end up with a re-circulating system on a 30 gallong sump that I shut
down and drain 20 gallons twice a week then manually add clean water. I have
already figured out how to do this with my existing equipment.

This would allow me to add a fluidized bed filter to the re-circulating
system. I have them on two large tanks and although it is a pain to set them
up and they can be finicky and clog, they are worth it. On a 20 gallon
brackish tank every single species I've had in the tank has spawned. This
includes bumblebee gobies, rainbowfish, mystery snails and livebearing
halfbeaks, among others.

Thanks for the advice,

Earl

-------------------------------------------------------------
Earl L. Blewett Ph.D.
Assoc. Professor of Microbiology
Dept of Biochemistry and Microbiology
Oklahoma State University - Center for Health Sciences
1111 West 17th Street
Tulsa, OK 74107
 
micro at earlblewett_net
Office (918) 561-8405
FAX   (918) 561-8414
 


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