| Ray . . .
this from a knowledgeable poster on another forum:
For a new plaster coat, you'll need to add muraic acid to drive PH to approx. 6 and KH to zero for 2-3 weeks to "break in" theplaster.
The first week or so, you'll be adding the acid 2-3 times a day to keep the PH down. After that you'll find the acid lasts a little longer and therefore needing less.
After 2 - 3 weeks, when the PH no longer bounces back after the addition of the acid, do 100% water change and start the cycling process.
Also you must keep the pump running 24/7 during this time for circulate the water.
from Thomas T. of Sugarland, Texas
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Don
Member: AKCA, ZNA, KoiUSA, Koi-Unit. CHKPA
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