I buy Hypo from Cesco on eBay. It's labeled for Pool DeChlorination but it; ls also photo grade. Around $35 for 10pounds shipped free. Sodium Carbonate and metabisulfite come from Duda Energy also on e-bay $12 for 5 pounds of Carb and $8 for 5lbs of metabisulfite.
I get the 'exotics' like hydroQ and Metol, etc, from the Formulary.
I have two questions: 1) Can you do better? and 2) Where do you get your sodium sulfite? (there is a guy on eBay with sulfite, but his approval rating is 8%, so he's not the guy!) so I'm still buying that from the Formulary as well.
Thanks!
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