Messy foods

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Caveden

Potamotrygon
MFK Member
Jul 21, 2020
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Many bichir enthusiasts in Singapore feed their bichirs with Japanese herring cause it’s supposedly their favourite and good in nutritional value. Of course following the trend I bought from the same supplier as everyone else. For the past 3-4 months I have been feeding my bichirs herring and the occasional prawns. Just to say, herrings are one of the most messy foods ever. The guts of the herring would be all across the water with the scales floating. Although the filter clears it up; the following days after would cause me so much stress. the defecate of herring breaks up extremely easily, so easily that when the bichirs swim past their poop on the bottom of the tank it would break apart into small fine particles. The area near my tank would smell so bad of fish poop I had to add an air freshener there.
I had two threads created on questions, why my nitrates wouldn’t go below 100+ and had such huge detritus worm outbreaks, shown below. Everytime after the herring feedings my ammonia levels would increase from 0 to 1 or 2 Then a month ago the suppliers ran out of stock for the herring, and thank god it did so. Found out it was the herring that caused all the problems in the first place. Since I had to feed prawns to my surprise my nitrates managed to stay low, ammonia levels around zero mark and no more detritus outbreaks.
Created this thread just to wonder, did anyone ever face such problems and found out the hard way like me? What foods do you guys feed to your fish (especially predatory fish like mine) that doesn’t create such a mess? Reason for this is because I read somewhere on Facebook prawns are considered to be high in thiaminase.

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Since herring is fairly oily fish, cloudy water is no surprise after feeding it .
Trying protein skimming (foam fractionation) might come to good use, cranked up for a while after feeding.
I have used DIY foam fractionation on predator tanks, and on a small koi pond, and it had the capacity to remove plenty of stuff, not picked up by normal filtration.
Beside oily proteins, it removes free floating algae, other DOCs, and even has the ability to remove some parasites.
Video below of it working on the pond.
koi pond fractionation
 
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