High PH - Thoughts?

[gmpolan]

Im quite puzzled lately as why my PH is so high, its stable but high. The corals all look good and are getting growth but the issue is my C02 tank is constantly pumping into my reactor thus burning up quite fast.

The probes are DA's are both are fairely new and were calibrated within the past few weeks. Tank PH is around 8.5 and i cant get the reactor to go down and further than around 7.0

Thoughts?

 

[seth the wine guy]

If you're maintaining that high a PH I would be surprised if the CO2 was actually making into the reactor/tank. Is the reactor being run off a manifold or small pump?
Do you have a visible bubble counter? What type of selonoid/regulator are you using?

 

[gmpolan]

Its a MRC CR2 with an additional chamber, selonoid is an aquaticlife and no counter, i just listen as the C02 hits the pump.

 

[gmpolan]

any other thoughts?

 

[fidofence]

Air line clogged? Do you have a back flow preventer? Is media clogged?

 

[superclown]

Do u use salinity brand salt?

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[gmpolan]

Naw i used to but left it a while ago. I did however clean the lines out yesterday which seemed to help and swapped in a new C02 tank. Whats odd is the PH dropped but only down to 6.60 so it still stays on constantly. Should i be adding more C02 or what?

 

[fidofence]

You sure you calibrated the probes correctly

 

[gmpolan]

Yes..

 

[fidofence]

You use 7 & 4 fluid for reactor and 7 &10 fluid for display?

 

[gmpolan]

yes...

 

[seth the wine guy]

When I couldn't get the PH in my reactor to drop I increased my bubble size and frequency. Worked for me and since you have a controller for it, I think it would for you too.

 

[seth the wine guy]

The above change I made was combined with adjusting the effluent rate. A slower drip with a much lower PH level in the chamber resulted in a very "rich" effluent and less CO2 consumed. To keep the drip valve from getting clogged with the "rich" effluent I submerged it directly into water current. (That meant under my return.)

 

[ripped tide]

Where is your alk?

Edit: High ph is usually a result in a much higher ratio of basics to acids. If you have a really high alk, it may be the issue. Are you adding ozone?

 

[gmpolan]

Alk is low, like 5's...just switched salts (salinity to IO reef) and all my levels are below par. I finally got it down but still alittle unsure. I just increased the flow of C02 from the solenoid. And no ozone....