13.5 fluval PH

Powerstroke nut

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Hello, Question. I have a 13.5 fluval tank with torch’s, Goni, monti pora and gsp
in my tank. In the process of plumbing my larger tank 90 gallon with 30 gallon sump. Regardless I can’t keep my PH up at all. Have the Apex EL controller. pH probe is newer and been calibrated twice to confirm it’s accurate. I do weekly water change of 5 gallons per week. Use tropic Martin salt.Filter floss gets changed 2 times per week. Tank has been running for 3 years with just 2 clown fish. No coral until the past 6 months. Alk-12, calcium-550, magnesium-1250, nitrate 14.5, phosphate 0, PH 7.92, water 77 degrees. I tried dripping Kalk. But it’s ph up and down without dosing. 20 lbs rock. Yes rodi water stage 6 brs system. Water filter changed on regular basis. No algee or Dino’s. Am I doing to much for a small tank? Should I not chase ph? I have dosed by hand All for reef by tropic Martin on occasion before trying kalk. All coral seem happy. Fish are happy. Ecotech XR-15 set to all blue. 40 percent maximum. Light on 7 hours per day only. Tunze auto top off. Also have an echotech MP-10 on very low flow. Just want to include everything. Fish only get what they eat from my hand. Few pellets per day.

IMG_2962.jpeg IMG_2959.jpeg
 
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Mr. Mojo Rising

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Maybe it’s just the angle of the pic but the water surface looks completely flat. Point a powerhead at the surface to break it up and help with gas exchange. More oxygen in the water might help bump up the ph
 
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Powerstroke nut

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Maybe it’s just the angle of the pic but the water surface looks completely flat. Point a powerhead at the surface to break it up and help with gas exchange. More oxygen in the water might help bump up the ph
Ok will try that. I have one supply pointing up and one down. I forgot to mention I have a echotech mp10 on also. But very low setting
 
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