What if I painted a 12" ceramic tile in black and white squares?
Would that work too? I don't know how to cut a tile into a
circle.
Sajjad
--- "Hoover, Jan J ERDC-EL-MS" <HOOVERJ_at_wes.army.mil> wrote:
> 1. It may be too late to get the WWMD kits but you can improvise.
> If you
> know a biologist or environmental scientist, you may be able to
> borrow a
> water quality probe or water quality kit. If you do not know someone
> with
> special equipment - just grab your aquarium thermometer and pH kit
> and make
> yourself a Secchi disk. You'll have 3 of the 4 requested parameters
> and
> partial data are better than no data.
>
> This is what a Secchi disc looks like and how it is used:
>
http://www.dnr.state.wi.us/org/water/fhp/lakes/selfhelp/secchiman4.htm
> www.cfr.washington.edu/Research/fact_sheets/20-CSSDisc.pdf
>
> This is how you can make one:
> http://psll.ca/general/reynolds_e.htm
> http://www.torontozoo.com/adoptapond/curriculum/g1-field-make.html
>
> And this is how Secchi data are interpreted:
> http://www.mlswa.org/secchi.htm
=====
-- Sajjad Lateef e-mail: sajjad_at_acm.org Note: Any e-mail to me with my first name in Subject or without a subject line is automatically filtered out and discarded as s p a m . /----------------------------------------------------------------------------- /"Unless stated otherwise, comments made on this list do not necessarily / reflect the beliefs or goals of the North American Native Fishes / Association" / This is the discussion list of the North American Native Fishes Association / nanfa_at_aquaria.net. To subscribe, unsubscribe, or get help, send the word / subscribe, unsubscribe, or help in the body (not subject) of an email to / nanfa-request_at_aquaria.net. For a digest version, send the command to / nanfa-digest-request_at_aquaria.net instead. / For more information about NANFA, visit our web page, http://www.nanfa.org