DIY fresh air for skimmer ideas?

[jgvergo]

But you are stabilizing your pH by creating instability in your alkalinity. There's daily swings in pH due to CO2 Photosynthesis etc. pH swings don't mean much IMO, however alkalinity swings are a big deal to SPS. The more constant you can keep you alkalinity the happier things are going to be.

I understand your point Rick, and it seems logical. I changed my dosing to be evenly spread over the entire day. I'll see what happens to the PH AND my SPS and let you know the results.

 

[Velcro]

Your ph is fine. No need to complicate things and risk exposure to outdoor pollutants

 

[jgvergo]

Wow, I've really seen some interesting results so far. The red arrow on the PH graph shows where I switched my Alk dosing from night time to constant over a 24 hour period. My PH has gradually crept up to a level I've never achieved before and it's still increasing! I'm very happy with the results. Over the last 24 hours my PH has averaged 8.25 ))

 

[jgvergo]

I've really settled in to a nice PH range now. Average is 8.27!