Short answers:(posted 8385 days ago)1. Developer - discard after use. 2. Stop bath - too cheap to save. Pour into developer to neutralize both and discard. 3. Fixer - Use Rapid Fix. Reuse according to published exhaustion rate. 3. Hypo Clearing - Reuse according to published exhaustion rate. 4. Photo-Flo - Too cheap to save, use 1/2 strength (of manufacturer recommendation) in distilled water for film. Usually not necessary for paper. 5. Selenium Toner. Reuse according to published exhaustion rate. You should dispose of this per your local waste disposal regulations, not down the drain. 6. Hypo Clearing after Selenium Toner - Reuse according to published exhaustion rate. Do not use same stock as the Hypo Clearing used after the fixer.