There have been some white caps appearing on my Botrycladia red grapes over the past few weeks:
I was initially wondering if it was going sexual, but it doesn't seem that the grapes are completely going white and losing consistency. Instead, the white caps seem to be hard. Is this like a Ca precipitate on the grapes? I don't notice white deposits anywhere else (but also consider, might be hard to see anywhere else).
Any thoughts? Some parameters:
Sg: 1.025 (down from normal 1.026)
Alk: 7.6 (Red Sea)
Mg: 1710ppm (Salifert; yes, that's right and test is consistent with Red Sea...been running in the high 1600s for many months due to weird batch of HW salt)
Ca: somewhere between 500ppm and 530ppm (Red Sea, harder to tell than Salifert since color changes more slowly)
NO3: ~4ppm (Salifert)
pH: ~8.3
@Subsea have you seen this before?
I was initially wondering if it was going sexual, but it doesn't seem that the grapes are completely going white and losing consistency. Instead, the white caps seem to be hard. Is this like a Ca precipitate on the grapes? I don't notice white deposits anywhere else (but also consider, might be hard to see anywhere else).
Any thoughts? Some parameters:
Sg: 1.025 (down from normal 1.026)
Alk: 7.6 (Red Sea)
Mg: 1710ppm (Salifert; yes, that's right and test is consistent with Red Sea...been running in the high 1600s for many months due to weird batch of HW salt)
Ca: somewhere between 500ppm and 530ppm (Red Sea, harder to tell than Salifert since color changes more slowly)
NO3: ~4ppm (Salifert)
pH: ~8.3
@Subsea have you seen this before?