Low PH problems.

[Surfking61]

Hi, Merry Christmas all. I have a 30 gallon nano tank. It is in it's 2nd month. The PH was good until about 2 weeks ago. I use reef crystals salt. I am dosing with NOPOX and Reef Fusion by Seachem. My PH is averaging around 7.8 to as low as 7.65. My calcium is 440. Alkilidy is 10.8 and Magnesium is 1360. Salinity is 1.025. I have 25 lbs cured dry Fiji rock and a 2" sand bed. This tank is off chemically and not sure why. I do a 5 gallon water change every week. I have one fish, it is a Radial File fish, about 1". I have Star polyps and Zoas. ORA Birds of Paradise, and a Hammer. The Hammer and the ORA BOP are doing fantastic and stay open from lights on till lights out. The outers close up about 2 hours before lights out when the PH starts to bottom out. Protein skimmer is working good and running a small reactor with ro carbon. Any help and advice would be greatly appreciated.

 

[twilliard]

Your carbon dosing a 2 month old tank?
Lack of o2 or elevated co2

 

[reef life]

Don't go crazy trying to elevate the ph. If your coral looks good and gets up to 7.8 I would't change much. There's info on a scrubber to help increase ph a little bit if you search this forum.

 

[Surfking61]

Your carbon dosing a 2 month old tank?
Lack of o2 or elevated co2

Should I stop using the reactor with the carbon? It was recommended to me by Russ at American Reef
and the guys a Bulk Reef Supply. If I shut off the reactor the water gets cloudy but then when I turn it
back on the water gets super clear in about 2 hours. This is my first mixed Reef with LPS and SPS. Last
tank was mostly fish with just a few soft corals. That tank was 175 with a heavy fish load and a 125 gal.
refugium and ran for almost 10 years. Thanks

 

[twilliard]

Keep carbon running
The carbon dosing might be working against you (nopox)

 

[Surfking61]

Keep carbon running
The carbon dosing might be working against you (nopox)

I just started using NOPOX this past week. Do you think I should stop using
it for awhile to see how it goes or will stopping it cause more problems?
Had a high nitrate spike that's what made me go to NOPOX and doing higher
water changes.. I was doing GFO and carbon till I switched to NOPOX. Would
you say I should go back to the GFO and carbon and cut out this NOPOX and see
how it goes? Thanks for your help and hope you have a Merry Christmas.

 

[Randy Holmes-Farley Verified Community Expert]

If the pH is low, it is likely because you have excessive CO2 in your home air.

This has more:

pH And The Reef Aquarium
http://www.reefedition.com/ph-and-the-reef-aquarium/

 

[Reef 450]