well I did it! finally 0 nitrates! Tank was as high as 80-100 months ago.. within last 10 days have put some mangroves & chaeto and a 120w 5000k CFL flood bulb in yesterday for them. tested my nitrates last night and they have been around 20ppm, looked at my skimmer and it skims alot last nite intoi this morning. now just tested my nitrates and they are zero or within 1ppm of zero. is this possible to drop 20ppm over nite? I did also dose a very small bit of vodka last night as Ive been doing this over last 9 weeks, and planed on stopping any further..but maybe little here or there. My thoughts are because I upgraded to good 120w CFL light over my mangroves/chaetos in my sump they probly sucked alot of nitrates out of the water? also I didnt feed fish last night, and will only feed probly every 2-3 days from now on.. so whats everyones thoughts? possible?