acuygongco
Koi Lover
Feb 19, 2007, 1:32 AM
Post #2 of 10
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Re: [mikoi] HELP!! dissolved oxygen?????
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Mikoi,
I've seen your pond and filter set-up a few months ago in this forum site, while i'm trying to engulf all the information i can before building my pond(small ), and have been admiring yours since then (wish i set up mine the way you did... budget constraints ) and any pond couldn't get anything better than yours.
for you to have that kind problem and as you said 3x it has happened, would be close to impossible for me(newbie)! but since you did, i think you'd better try to eliminate some of this possibilities to really find the culprit:
- water parameters: did you have a chance to check water parameters during the time of incident? High Ammonia, Nitrite may cause it.
- Have you suffered any parasite, bacterial or fungal outbreak on your your koi or other fish in your pond as of the late (before the incident)? it may have weakend them. just to add, have you checked if anything died inside the pond (not the koi's, i mean a rodent, frogs, etc.)?
- Salt in your pond? salt decreases DO in the pond. Temperature? High Temp of above 85F also decreases level of DO in the Pond. very hot weather were having right now!
- Water Quality of the water (Tap or deep-well) that you add everyday to your pond, does it contain any toxins that could be harmful? chlorine from tap water would be fatal to fish.
- any chemical, soap, fertilizer spilled inside your pond accidentally as of the late? better ask the help (politely, i mean)?
- any odd behaviours you observed with your koi's? that's a very good early warning sign, if somethings bothering them.
Remembering your filter set up, you have also a TT installed, very effective for water degassing and additional biofilter, and your 2 air pumps continually supplying air throughout the system, i think you have no issue with DO in your pond .
i think it might be something in the water, just try to backtrack everything up to the day it has first occured. because as you said, after turning back the power, everything went back to normal, your filter system may have eliminated the culprit, it may have dilluted it in the whole filter process.
just pray no brown-outs for now!!!
Albert
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) but rather, your filter system is not running and its not nitrifying the ammonia that the fishes have excreted during the power outage, and other mechanical and biological process is not being done (No water circulation
. So definitely, no feeding during Brown-outs. And better if you give them small amounts of food at 5-6x daily, rather than big amount at lesser frequency. so that they'll have a chance to digest and discharge it 
and more importantly give your filter system a better time to do its job properly, until the next feeeding time. 
, and more income!
