kodak d23 replenished

Eggs in Nest - 35mm - Ilford HP5 - Kodak D23 Developer Confused about the title then this latest article my help https://www.ianbarberphotography.co.uk/a-slow-return/

After mixing the Kodak D23 developer a few weeks ago, I have developed around 320 sq ins of film in the stock solution and another 80 sq inches after the first replenishment. The testing I have been doing was to get a development time as close as I could to give me a Zone 8 density of about...