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Discussion Starter · #1 ·
I can't get my ph below 7 for some reason. I have to add baking soda and calcium carbonate (also Turbo Calcium) and A little Epsom salts to get water up to 6˚Kh and 6˚Gh from tap water of 1˚Kh and 1˚Gh. Naturally my PH jumps way up after water changes, but it takes a long time to go down and doesn't go below 7. I have a new pressurized co2 system flowing through Gomer's inline DYI reactor at 1 bubble per second, which seems like a lot to me. Shouldn't the PH be going down with that much co2? Some of my plants do produce O2 bubbles after a few hours of light and co2 and some are growing like crazy some are not. It's hard to tell exactly what is causing growth in some and not in others because I have just started to dose with KNO3 and KH2PO4 so things are definitely in transition.

I would like to get the PH down to 6.8 or so to get 30ppm co2. Any Ideas or are my levels OK? Should I add even more co2? Are my plants just using it all up?

29 gallon
110 watt compact AH
lots of plants
50% water change per week
 

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60 Posts
Discussion Starter · #11 ·
Yea, I suppose I'm getting too worked up about what I think the right numbers should be. Besides trying to figure out fertilizer amounts my tank seems to be doing pretty well. There isn't much surface agitation and who knows how accurate the A.P. tests are. The PH spike is what makes me feel like things are unstable. I'm going to add less baking soda to prevent the spike and keep the KH down around 4˚, then I suppose the Ph will drop down also.
Thank you all for the advise.
 
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