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#1
03-22-2021, 01:35 AM
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Water Chemistry Frustration
Hello,
My 90G has been up and running for 1 year next month. I have 8 fish total. 1 Tomato Clown, 1 Sailfin Tang, 1 Niger Trigger, 1 Flame Angel, 2 Blue Damsels, 1 Bi Color Foxface & 1 Talbot Damsel. I have 3 colonies of zoanthids that have not grown since I bought them in November. For the first 9 months I did not test my water parameters. I had a 187G 10 years ago that corals would thrive in without testing. I assumed this go round would be no different. I was wrong. Every sps coral I put in my tank bleaches in 3-4 weeks. Every LPS coral has died within 3 months and my zoathids do not grow. The only thing that seams to grow is diatoms on my rock and sand bed. Coraline algae seems to grow. The only good news is that my fish are fat and healthy. I started to test my parameters in mid January. My alkalinity was 5.6dkh, PH 7.6, temp 78F, salinity 1.026, nitrate 10ppm, calcium 513. I started to dose kalkwasser in February and my PH stabilized at 8.2. Alkalinity only went up to 6.5dkh. I have been using Aqua Forest reef salt. I have an MP40W and Tunze 6055 wave pump for flow and surface agitation. My I open my windows to get fresh O2 in every day and now with the weather getting nicer, they are open all the time. I switched salt to Red Sea blue bucket last week and have been mixing the salt with half aqua forest. I took my readings today and my alkalinity was 4.5dkh. Every other reading remained that same. I test my salt mixing station in the basement and the alkalinity read 4.0dkh. I switched out all my RODI filters this weekend. I知 sure that痴 not the cause of my low alkalinity but I知 running out of options... at this point, I知 ready to leave my tank alone for a while and just see if it corrects itself over time. Any thoughts would be greatly appreciated. 
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