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Egg Fungus
Wednesday, January 22, 2014 9:23 AM
( permalink)
First off, if this is in the wrong section, I am sorry, Mods, please move. I pulled my Frenatus tile at day 7 and put it in a tank of parent water (5g in a 10g tank) and put an airline in front of it. The eggs all looked great and were fine that day, on day 8 evening about 25% of the patch of eggs were white fuzzy (fungus) and I thought the remaining would hatch that night, they did not, and today (morning day 9) 50-60% are now covered. I dosed Methyl Blue per the water volume and hope the remaining hatch tonight. I have another batch of eggs from a designer pair of clowns that I pulled 2 days after spawn (female was eating them) and I dosed Methyl Blue day one, and no issues to report on these, so I am wondering is this should be standard procedure for me. However, my primary question is, will the remaining eggs be affected by the fungus after dosing the Methyl Blue? I am also assuming the ones already covered will die in the cases and or are already dead. Thanks Justin
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Re:Egg Fungus
Wednesday, January 22, 2014 11:01 AM
( permalink)
My thought would be once you get fungus showing on some the rest are likely doomed as well. Go to Matt's Lightning site and read some of his latest entries. He discusses recent battles and treatments for fungus and/or eggs going bad. He used methylene blue and hydrogen peroxide.
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Re:Egg Fungus
Wednesday, January 22, 2014 12:44 PM
( permalink)
As Dan mentioned, fungus will likely spread once it starts but, you may get some survivors. From the sound of your description though I think you might not have aerated them properly. Are you using an airstone or just a rigid airline as you mention? An airstone will help disperse the bubbles better and help reduce the chance of fungus. Getting the proper air flow is kinda tricky, even more so if you're pulling eggs earlier.
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Re:Egg Fungus
Wednesday, January 22, 2014 1:32 PM
( permalink)
I had/have a blue "glass" style air stone on them, maybe to lightly. At first I "blew" a few of the eggs off with it so I turned it down. Ironically, the eggs I knocked off look good and are developing. Maybe they will be my lone survivors. On the Photon eggs, I am using wood air stones, but I also buy the blue in with them from the start.
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Re:Egg Fungus
Wednesday, January 22, 2014 2:23 PM
( permalink)
I switched to a stone that was about 3" long or so at one point because I wasn't getting eggs hatched on the edges. I always adjusted my flow at first until I was a little worried it was too much and it seemed to work well. I think since you are having to pull nests early chemical treatment will be the way to go. An outside the box thought... Since you are pulling early, would putting a powerhead blowing on them be better than air? Then just before hatching night lights out switch to air so they don't get chopped up. Once I got things down a bit after my first few hatches I would pull the tile literally minutes before lights out and then go back no more than 2 hours later (depending upon the pair the eggs belonged to) and the hatch was complete. It probably gave me some leeway on too much air since the larvae had such a short exposure.
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Re:Egg Fungus
Wednesday, January 22, 2014 2:32 PM
( permalink)
 Originally Posted by waldend
An outside the box thought... Since you are pulling early, would putting a powerhead blowing on them be better than air? Then just before hatching night lights out switch to air so they don't get chopped up. Once I got things down a bit after my first few hatches I would pull the tile literally minutes before lights out and then go back no more than 2 hours later (depending upon the pair the eggs belonged to) and the hatch was complete. It probably gave me some leeway on too much air since the larvae had such a short exposure.
This is a good idea but might be difficult to implement. Water is better but it's difficult to control the flow as you can't really see it like you can see bubbles or adjust the amount of flow with the powerhead.
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Re:Egg Fungus
Wednesday, January 22, 2014 4:30 PM
( permalink)
I know lots of people use broodstock tank water for hatching and even larval tanks, but I have not had any good success doing this. I had the same outcome as you - fungus if I pulled the eggs a day early. Now, I use new saltwater in my larvae tanks sterilized using chlorine bleach 1 mL per gallon, and an hour later dechlorinated with sodium thiosulphate. I scrub the tile all around the eggs to get rid of the slippery-feeling bacterial coating, then put eggs, tile and all into a hydrogen peroxide bath (3-5 mL per liter) for 15 mins. Then the tile with eggs is put into the sterilized larvae tank. I get much better pre-meta survival doing this as well.
Don't let fear and common sense stop you! =]
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