PH keeps dropping despite high dkh

david613

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Hi guys . Just set up my evo 13.5 about 2 months ago 1 inch araganite bed plus 8lb life rock and put marinepure gems in filter chamber (gems were in my 75g DT for 4 months ) . Ph was very low 7.6 - 7.8 so i buffered with seachem reef buffer . this happened several times over 1 week. just tested dkh and was at 20+ dkh !!!!!!!!!!!!! (hanna checker i didn"t belive it tested it against my DT hanna checker read 11.7 dkh so i kNow its calabrated ). Did a 4 gal water change brought it down to 17.5 dkh I plan on doing another water change . ph DROPPED AGAIN to 7.8 . I have since stopped using buffer for adjustments. WHY is ph staying so low with such high alk !!
 
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Hi guys . Just set up my evo 13.5 about 2 months ago 1 inch araganite bed plus 8lb life rock and put marinepure gems in filter chamber (gems were in my 75g DT for 4 months ) . Ph was very low 7.6 - 7.8 so i buffered with seachem reef buffer . this happened several times over 1 week. just tested dkh and was at 20+ dkh !!!!!!!!!!!!! (hanna checker i didn"t belive it tested it against my DT hanna checker read 11.7 dkh so i kNow its calabrated ). Did a 4 gal water change brought it down to 17.5 dkh I plan on doing another water change . ph DROPPED AGAIN to 7.8 . I have since stopped using buffer for adjustments. WHY is ph staying so low with such high alk !!
As reef already said you low ph is I’m 99% sure a high household co2 issue
 

((FORDTECH))

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Hi guys . Just set up my evo 13.5 about 2 months ago 1 inch araganite bed plus 8lb life rock and put marinepure gems in filter chamber (gems were in my 75g DT for 4 months ) . Ph was very low 7.6 - 7.8 so i buffered with seachem reef buffer . this happened several times over 1 week. just tested dkh and was at 20+ dkh !!!!!!!!!!!!! (hanna checker i didn"t belive it tested it against my DT hanna checker read 11.7 dkh so i kNow its calabrated ). Did a 4 gal water change brought it down to 17.5 dkh I plan on doing another water change . ph DROPPED AGAIN to 7.8 . I have since stopped using buffer for adjustments. WHY is ph staying so low with such high alk !!
try to open your windows and turn on any ventilation fans for few hours and retest I bet it will go up. I’ve found that things like using the oven with a tightly sealed house will cause this. Now I force wife to always run ventilation van if oven is on it helps little bit but still affects my ph negativity
 
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david613

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try to open your windows and turn on any ventilation fans for few hours and retest I bet it will go up. I’ve found that things like using the oven with a tightly sealed house will cause this. Now I force wife to always run ventilation van if oven is on it helps little bit but still affects my ph negativity
OMG I think you nailed it ! Right now temporaraly keeping tank in the kitchen. (eventually plan to set it up in my office) THANKS!
 

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For what it’s worth my 120 is in living room with sump thru floor to basement 100gallons along with 60 gallon frag tank and 30 gallon refugium also down stairs but when I open windows on first floor even tho most my system is in basement only 120 in living room within few hours ph goes up .3
 

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