Chem Prob

[reefer125g]

Well I have been fighting this now for over 4 wks now. All my numbers are low and thay wont go up. With 6x 40 gal water changes and adding Chem.I canot get my PH above 7.60 my ca is at 200 and mag is 1100 I have never had this type of prob in 10 years of reefing funny thing is my kh is at 12

 

[stingythingy45]

What are you using to test KH?

 

[NeverlosT]

reefer125, how much gas exchange do you have going on? Do you have a closed hood? How about over the sump?

If you restrict gas exchange too much, the tank can accumulate CO2 which can drag your pH down. I know my tank pH went up about 0.75 when I just lifted the hood off the tank!

So I dont know about your setup, but more fans or increasing airflow is worth a shot!

 

[ReeferMedic]

First thing that comes to mind is what test kits are you using and how old are they. Those numbers make no sense.

 

[reefer125g]

reefer125, how much gas exchange do you have going on? Do you have a closed hood? How about over the sump?

If you restrict gas exchange too much, the tank can accumulate CO2 which can drag your pH down. I know my tank pH went up about 0.75 when I just lifted the hood off the tank!

So I dont know about your setup, but more fans or increasing airflow is worth a shot!

I have a 250 open top my sump is aprox 90 gal open top with aprox a flow of 4200 gph it is a in wall system with its own sump room with tons of air flow.

 

[reefer125g]

First thing that comes to mind is what test kits are you using and how old are they. Those numbers make no sense.

Tell me about it I am so confused Just picked up new kits a wk ago all new elos

 

[MikeG]

Tell me about it I am so confused Just picked up new kits a wk ago all new elos

Have you tested some fresh made saltwater? Can try adding calcium suppliment directly to a small volume of water and see if it changes. As for pH, put some water in a cup with an airstone for a little while and see if the pH changes. Could also try putting the air pump in a window to draw in outside air and see if pH is affected.

Does seem odd that the numbers aren't changing.

 

[reefer125g]

fresh made saltwater ph is at 8.2 ca 400 I put it in the tank the ph goes upon the AC JR to about 8.0 then starts to drop off after about 2 hrs as far as air goes my tank room is off my garage I just open the door and it would be like my tank is outside . PS no there is no cars parked in the garage LOL

 

[jackthestrat]

Recalibrate your pH probe and try a different brand of CA test kit.