I've used prime for the last 5 or 6 years with no issues. Lately the water co. was shocking their system and the water smelled like a swimming pool with all the chlorine in it. I double-dosed the prime and backed it up with sodium thiosulfate drops (Zip). I buy both by the gallon from Big Al's. I know a chemist who uses only the Zip drops even though his water contains chloramines. He says his biofilter handles the residual ammonia just fine.
Mark
Mark


Thank you all.
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