Hey Brooks,
I actually did it last year when I ran some experiments with controlling nutrient levels with biopellets, GFO, and dosing Spectracide Stump remover. I played with being able to adjust my nutrient levels on the fly and to see if I could use biopellets as a sole source of nutrient removal by dosing additional nitrate to the system to force the biopellets to remove even more phosphate in my system (as carbon dosing is heavily skewed towards nitrate removal), hoping to remove GFO altogether.
While the ability to control nutrients was achieved, the ability to remove biopellets entirely never really manifested. At a certain point, I could have continued to dose even more nitrates to the system but it seemed like a lot more work than it was worth, not to mention adding the extra element of human error and potentially overdosing nitrates. I thought it safer and more practical to stick with my biopellets and GFO regiment and so the experiment ended.
Funny you mention this, because when I put my corals back in the tank about 2 weeks ago, I noticed that the colors were pretty faded. It correlates with my decreased nitrate level as I'm currently reading about 0.25 ppm of nitrate in my system using the Red Sea Pro Nitrate test. I was planning on dosing my nitrates back up again (just have to find my old bottle of stump remover) and get it back in the 5-10 ppm range that was treating me so well before. I'll probably only maintain this for a couple weeks because on March 3, my tank will have hit the 76 days of being fallow and I'll slowly start reintroducing fish. At that point, the bioload associated with the fish and feeding them should be able to maintain my nitrates at the 5-10 ppm that I was achieving prior with a full fish population.
If I had to guess, 70% of the tanks in Austin probably don't need to be thinking about dosing nitrates. It's only when you're being really aggressive with nutrient removal do you need to think about adding nitrates back into the system. The other thing to think about is just because you're reading 0 on your nitrate kit, doesn't mean you don't have a nitrate problem. If you see excessive algae in your system and you're reading 0, the algae is really uptaking all your nitrates... so if you start dosing nitrates because you think you're deficient, you'll see an algae bloom in the tank and your nitrates STILL may read 0.
Either case, I'm glad you posted it as information like this helps to further our knowledge of reef keeping and brings the discussion to ARC. I caution though that most will probably never need to do this so make sure you do your research before you start dumping stump remover into your system.