Improve Ph

Do protein skimmers improve ph?
They can as long as the air going in to it has less CO2 than the surrounding air. The best way to accomplish this is to run your airline outside so it draws in "fresh" air. If you can't do this, then a CO2 scrubber will also work.
 
What level should I keep the water in my back chambers? I fill like it’s too high
 
Skimmers can raise or lower pH, and may move pH in different directions different times of the day. The direction depends on the relative amounts of CO2 in the water and the air used.

Whether you consider that pH movement to be in improvement or not will depend on the starting pH and how it differs from your target pH range.

The short answer, however, is that in a low pH situation driven by elevated indoor air CO2 levels, a skimmer may lower pH.
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

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  • Not yet, but I have one that I want to buy in mind!

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  • Other (please explain).

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