I read a forum about how prime is only ok to use with copper power. I am using it rn with no issues.I've had somebody tell me that dechlorinator isn't an issue with amine based copper products, so I'm waffling on that aspect of being careful with reducing agents when using these copper products. I still feel that care must be taken with ammonia reducing products (Amquel, Prime, etc.). So - as long as you use the proper amount of dechlor for the amount of water you are using, you should be fine. The basis for all this are reports I keep having about people running into copper toxicity problems, while I never see that myself. One big difference is that due to my systems, I never use reducing agents, while home aquarists frequently do, but the issue may have some other basis, so I'm still pondering that....
Jay