LF Hanna Checkers GVRD

[Cujo#31]

PO4/NO3/Alk/CA
Once u find out u r color blind in yellow/green spectrum using chemical tests not so reliable.
Thank you

[michaelis88]

yea I just switched to alk hanna checkers, gives me very accurate number and I love my po4 hanna as well very realible.


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[Wheelman76]

I think jl is going to start selling them soon

[Madreefer]

I have some collecting dust. Pm me if intersted.

[monocus]

buy them from their site-you can also get large packs of regents

[lastlight]

my results from the ULR tester vary wildly. i'll do 3 tests one after the other and have no idea which to trust. makes a great paperweight.