Thanks Kim for your support. I got some pics I'll share of that spot. I've had my pseudo-water fountain/cannon going continuously to raise the pH. Has risen from 6.8. I just think though why not use the Borax to raise it quicker so that the water doesn't hang out to long in the corrosive side.
I too use a white background with the TFT-100 instruction card up and use the larger white part of it as a background. Or, on a cloudy day like today, I'll just use the sky. Today, I could clearly distinguish that it is 7.2
Day 21 @ 1000
pH 7.2
FC 3
CC 0.5
TA 80
CH 250 (I think it has been 250 not 300)
CYA 30 (as tested yesterday)
h2o temp 52
I'll looking at a CSI of -0.67. If I raise the pH to 7.5 either through aeration or Borax to 7.5, I am still looking at -0.37. So:
1. Should I raise TA back up to 90?
2. Leave CH at 250?
3. Use aeration for natural pH rise?
4. Use Borax to raise pH to 7.6, and leave TA and CH alone?
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Yesterday, Burkett's tech/diver prepping to polish spot(s)
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My pseudo-water fountain/cannon on 2nd step
Today, Day 21's pH 7.2
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Where's the polished spot?