We would not recommend filtering it again.
The carbon filter will strip a lot of the flavours away from the finished spirit. There will be a noticeable reduction in flavour.
You should make sure that you;
- First complete a stripping run
- Then dilute the collected spirit to 50% or below
- Put this through your filter
- Then dilute the spirit to 20% ABV, run through the still without saddles and with the botanical basket. This will ensure you have a clean spirit but still hold on to the flavours that you have just added to it.
We advise to ensure you have the cleanest spirit base when creating the gin/flavoured spirit.