GetDNet Posted September 25, 2012 Share Posted September 25, 2012 Hello Nano-Reefers, this is my first post and thanks to this page I have ventured into my first reef tank. Last week I bought a Biocube 14 with a bunch of upgrades and I'mooking for some advice on a situation I have with my reef tank and the nitrogen cycle. I read most of the topics I could find and couldn't find anyone with a similiar situation. The previous owner took apart his reef tank and left about 1.5 inches of sand bed in the tank (was still moist) that I lightly rinsed with saltwater prior to adding saltwater and 17 lbs of live rock from Dan at gulfliverock.com. I added the water, rock etc on 9/19. Did Ammonia testing on 9/19, 9/21 and 9/24 and the readings were all between 0 and .25ppm... so I was thinking my nitrogen cycle hasn't started yet (I've read about 2 dozen forum topics on it). Yesterday night I get back from work and notice a rusty color hue over 1/5th of the rocks and about 1/3 the sand's surface, sounds like diatoms to me... so I guess my cycle did start? This morning I did tested Ammonia, Nitrite and Nitrate... I'm still showing Ammonia around 0-.25ppm but Nitrite is over 2.0ppm and Nitrates are around 80ppm (attaching picture). The reason why I didn't test Nitrites or Nitrates the first few days is I went thru the Nitrogen cycle with some new freshwater tanks and the Nitrites and Nitrates were always zero until Ammonia showed up so I thought why waste the test solution. Is it possible that the existing sand bed that I only lightly rinsed still had enough bacteria to break down the ammonia to nitrite? hence no ammonia spike? Not sure if I should I introduce bottled ammonia into the system and see if it affects the ammonia levels? or wait until the nitrites go to 0, do a partial water change and assume all is well? Here's what I have... My SG is at 1.024-1.025 PH level is just about 8 Temp 78 I've kept the lights on about 8 hrs a day as suggested on this forum. Thanks all GetDNet Link to comment
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