Anyone Dose Vodka?

[Mr.X]

I've been dosing vodka for about a year. I have a 200 Gallon tank with a 60G sump. My nitrates were higher than 50 when I started, then dipped to an all-time low at 20, then back up to 50. I didn't think the vodka was doing anything, so I trickeled it down to zero over 2 weeks. Then after 6 weeks or so, everything turned brown so I restarted the dosing ramping up to 8Ml. This was around september or so. Finally by New years the brown was gone. I'm still dosing at 7Ml/day and nitrates are still hovering at about 50.

somewhere in January all of my culerpa died off, then all of my chato died (-- About a cubic foot) about 3 weeks after.

I also have 12 Mangrove plants, 4 inches of sugar sand, 200 pounds of live rock, and a coil denitrator.

I'm looking for alternatives to Vodka.