You haven’t really discussed how you know carbon dosing isn’t working.
Yes, you test, but it takes weeks to build up to a full daily carbon dose and you’re only on day three.
You haven’t mentioned whether you’ve notice additional export in your skimmer over the last three days (the more carbon you dose, and the higher your nitrates, the more active your skimmer should be).
About PO3…
You mentioned a ‘clean’ refugium.
I’m not sure what that means. If you have PO3 present, you should see macro algae growth. If PO3 stays at relative .0 for too long, you should have a die-off over time and a grayish-brown dust build up on the bottom of the chamber.
every time you change something - remove your refugium, add carbon, add/remove GFO - you should expect to see a negative reaction in the tank until the biome adjusts to the new conditions and it could take months…or longer.
Yes, you test, but it takes weeks to build up to a full daily carbon dose and you’re only on day three.
You haven’t mentioned whether you’ve notice additional export in your skimmer over the last three days (the more carbon you dose, and the higher your nitrates, the more active your skimmer should be).
About PO3…
You mentioned a ‘clean’ refugium.
I’m not sure what that means. If you have PO3 present, you should see macro algae growth. If PO3 stays at relative .0 for too long, you should have a die-off over time and a grayish-brown dust build up on the bottom of the chamber.
every time you change something - remove your refugium, add carbon, add/remove GFO - you should expect to see a negative reaction in the tank until the biome adjusts to the new conditions and it could take months…or longer.