zozo
Member
This week i calibrated my PH meters on permanent meter and 1 pocket meter.. I use them for cross reference, they both are never more then 0.5 point off from each other.
Now my permanent meter is in the back left corner and suddenly i see a PH drop to 5.6 and wondered, calibrated both again and it was OK. Took the pocket meter and did put that in diagonal opposit corner and it did read 6.3.
Now took the permannent probe and did put it in the same corner as the pocket one and both read the same.
If i take the pocket one and put it in the place where the permanent one is it read 5,7 to 5.8 it doesn't go as deep as the other.
In the back left the probe is somewhat shielded from view by the Echinodoris and ectualy i've never noticed it dropping so low before. Now i hang the permanent probe 15 cm more to the front in the mid side it read 6.3 as it should. put it back in the corner and it drops back to 5.6 that was all yesterday.. I left the probe in the mid side during the rest of the day.
Today i did put it back in the corner spot and it stays as is 6.4 now..
I realy wonder what could cause such a sudden PH drop in one specific corner of the tank. It defiances my logic and goes beyond my chemistry understanding. Can a plant do that at certain given time, make it's surounding more acidic? If it would be a co2 isue why isn't it permanent and fluctuating incoherent in that corner. It's just a 43 liter tank with sufficient flow. Almost 1 point off in a 15 cm range in about less than 1/6 of the volume of the tank?
Did/do others experience this too is there a logical explanation for this?
Now my permanent meter is in the back left corner and suddenly i see a PH drop to 5.6 and wondered, calibrated both again and it was OK. Took the pocket meter and did put that in diagonal opposit corner and it did read 6.3.
Now took the permannent probe and did put it in the same corner as the pocket one and both read the same.
If i take the pocket one and put it in the place where the permanent one is it read 5,7 to 5.8 it doesn't go as deep as the other.
In the back left the probe is somewhat shielded from view by the Echinodoris and ectualy i've never noticed it dropping so low before. Now i hang the permanent probe 15 cm more to the front in the mid side it read 6.3 as it should. put it back in the corner and it drops back to 5.6 that was all yesterday.. I left the probe in the mid side during the rest of the day.
Today i did put it back in the corner spot and it stays as is 6.4 now..
I realy wonder what could cause such a sudden PH drop in one specific corner of the tank. It defiances my logic and goes beyond my chemistry understanding. Can a plant do that at certain given time, make it's surounding more acidic? If it would be a co2 isue why isn't it permanent and fluctuating incoherent in that corner. It's just a 43 liter tank with sufficient flow. Almost 1 point off in a 15 cm range in about less than 1/6 of the volume of the tank?
Did/do others experience this too is there a logical explanation for this?
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