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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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
 
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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