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Old 05/12/2021, 04:55 PM   #1
tom obrecht
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Join Date: Oct 2004
Location: WI
Posts: 3,014
Sps keepers with higher nitrate and phosphate level

Iím curious if anyone is currently keeping acros with higher phosphate and/phosphate? I know nitrates are perhaps less critical but here are my current questions.
my system is ~2 years old. Started with dry rock and bare bottom. After 1 1/2 years I had what seemed like a lack of biodiversity which would be understandable with the start of dry rock and bare bottom. I was adding bottled bacteriaís of different strains and did have some bio bricks from a past system which I thought would be enough to seed the dry rock. After 1 1/2 years I was having difficulty keeping a wide range of sps. Some pieces did ok while others died. In an attempt to get things rolling ( and patience running out!) I added bagged (live ) sand. This seemed to help for a bit but then Cyano and Dinos hit hard. Phosphate and nitrates were zero or at least unreadable on my tests. I started adding nitrate and phosphate to help raise levels to readable levels. Without luck I ended up dosing chemiclean and within a couple weeks the tank looked as clean as it has since the day I started.
Now to my question. Since adding chemiclean my nitrates stay steady at 25 and phosphate at .15 which I realize is above the normal levels. However the tank continues to run clean. I have been dosing phytoplankton daily without issues. Iím curious what everyone feels maybe the reason some sps do well and others fail? Plating pieces like caps seem to do well while some acros stn. Iím thinking it maybe the higher phosphate and nitrate but hesitate to lower thinking Cyano may return. Thoughts?


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