CO2 test number two is going to involve my skimmer fed with enriched air, put on my scrubber lighting timer. This should treat the whole sump with a target of pH 7.9ish. Hopefully this should prevent anything from dissolving and still put extra carbon dioxide on the screen.
Still getting ALK usage in line with calcium, so no problems yet.
INTERESTING DEVELOPEMENT - just tested pH of screen run off and its 7.5. so that means lots of Co2 is on the screen without further supplementation. ( just air bubbles ). Gonna re test tomorrow. This would likely be the reason for my growth rates, and why in the initial stages of bubble implementation I had an adverse reaction to high lighting scheme.
If my re test confirms this, this method allows a low pH on the screen whilst leaving the rest of the system at normal reef pH to aid in calcification rates.
Well, retested the screen effluent with bubble screen and still got 7.5 to 8.2. It looks as though the Co2 concentration alters greatly after the bubbles subside. Immediately upon entry into the water in a bubble free zone water is laden with Co2. This Co2 then must gas off within a few seconds because further away from the screen, pH increases significantly with distance to normal reef pH. Happy days.
What is main difference between 1st and 2nd experiment ?
Why Co2 could not gas off in case of 1st experiment ? Too hard to follow sometimes
Kotlec - I am not the easiest person to understand at the best of times, the wife would confirm this. The first experiment was with Co2 produced from yeast. This did gas off, but took a while and lowered my screen pH too far (7.25 ish). Using just air bubbles ( no Co2 enrichment ) the pH was a more manageable 7.5 ish and gassed off almost immediately.
Got it now.
3 days screen. No ALK loss detected.
Garf, if you don't mind, can you please recap your entire system for all of us? Give a description of tank, scrubber, and other filtration, and how you are currently running it, with pics. Pretty please.
- Bud
LED Algae Scrubbers currently in production
Click here for product threads and pricing for the Turbo Algae Scrubbers
Click here to read about the 3rd revision of my Turbo Algae Scrubbers - the Turbo HF
Floyd - How can I refuse a request like that. May take some time though. Will post in the builds section within next few days or so hopefully. I also work, got 2 kids, cat, dog, 3 parrots, 4 rabbits, wife and a partridge in a pear tree.
I agree - wife consumes some time
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