Laconic

I have read wonderful things about Purigen and I have decided to try it out. There are some questions I have about Purigen.

Will AP's StressCoat prevent the regeneration of Purigen?

I understand thet Purigen is not a biological filter media. If so which part of the canister filter should I put Purigen? B4 the biological media, for example Matrix or at the last stage b4 the fine filter wool?

Will purigen affect blackwater conditions? Cos i use peat filtration as well.

Thanks