Can a 100 micron filter sock filter AEFW larvae?
- Thread starter dg3147
- Start date
dg3147
Active member
may have answered my own question...
"We have only studied AEFW development and life cycles in aquaria so far, but what we’ve discovered is very interesting. AEFW hatchlings (figure 7a) are very small (250–300m in length and 110–130m in width, i.e. 0.3mm x 0.1mm), and once hatched, they ‘swim’ into the coral skeleton, where they start feeding on the coral tissue immediately [4]."
source:
https://www.reefs.com/blog/magazine...l-of-coral-killers-acropora-eating-flatworms/
"We have only studied AEFW development and life cycles in aquaria so far, but what we’ve discovered is very interesting. AEFW hatchlings (figure 7a) are very small (250–300m in length and 110–130m in width, i.e. 0.3mm x 0.1mm), and once hatched, they ‘swim’ into the coral skeleton, where they start feeding on the coral tissue immediately [4]."
source:
https://www.reefs.com/blog/magazine...l-of-coral-killers-acropora-eating-flatworms/
dg3147
Active member
Aren't those motorized though? I plan on using double 100 micron filter socks tied into QT. (not generally recommended)
dg3147
Active member
If there was a way to use that to pump water into the QT, it might work.
dg3147
Active member
Double in-line 100 micron sock filter holder. It is the sock holder from BRS designed for 7" or 4" socks. I just used both and will have some redundancy in the system...if the first sock overflows, it will go into the second. No fail safe. But should work....
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dg3147
Active member
Going to dip while in the QT. The real problem is that I don't know if these filter socks, even if used in series, will capture 100% of waterborne larva. These socks that are rated as 100 microns capture 80% of all particles 100 microns or larger.
I am hoping that by using two in series it will capture all of them....but who knows.
I am hoping that by using two in series it will capture all of them....but who knows.
marinelife
Active member
From what I have seen in my tank is they hatch and go right to the acro they are on. The eggs are always near an acro. I feel you would not get many in a sock.
dg3147
Active member
I believe AEFW hatch both waterborne and non-waterborne larva. I assume it increases their chance of survival in case there are no acroporia left to eat.
I think a filter sock would absolutely be needed. The question becomes, "is it enough?"
from Dr. Rawlinson...
"Some polyclad species undergo indirect development, and hatch as a larva that feeds in the water column before settling to the seafloor and metamorphosing into an adult. This larval stage might increase the dispersal potential of the species and maximize the chances of finding a suitable adult habitat. Other species develop directly from embryos into adults (bypassing a larval stage), and as a result, have a more limited dispersal potential. Finally, there are intermediate modes of development that are neither direct nor indirect, as is seen in the AEFW (see below)....."
She goes on to suggest that the preferred development likely bypasses the waterborne larval stage, but may --at times--- include it.
I think a filter sock would absolutely be needed. The question becomes, "is it enough?"
from Dr. Rawlinson...
"Some polyclad species undergo indirect development, and hatch as a larva that feeds in the water column before settling to the seafloor and metamorphosing into an adult. This larval stage might increase the dispersal potential of the species and maximize the chances of finding a suitable adult habitat. Other species develop directly from embryos into adults (bypassing a larval stage), and as a result, have a more limited dispersal potential. Finally, there are intermediate modes of development that are neither direct nor indirect, as is seen in the AEFW (see below)....."
She goes on to suggest that the preferred development likely bypasses the waterborne larval stage, but may --at times--- include it.
Imagine one larger than a football field. :lol:
dg3147
Active member
vegaskid11
vegasreefers.com
I'm thinking of trying the same tactic. How's it going for you so far? I found AEFW a couple of days ago and was going to hook up a frag tank inline this weekend to try and isolate the Acros. I'm gonna buy the same dual filter holder and hope for the best.:beer:
dg3147
Active member
So far so good.
I couple words of wisdom, the sock coming from the DT to "QT" (i put the QT in quotes as it's important to realize it is not a true QT) will clog fast unless you have a pre-filter, so be ready to change the sock every 3 days --it will overflow fast without any warning. (though, It's unlikely an overflow would represent a disaster, as water borne larva are probably minimal and you are still performing weekly dipping.) I would also QT/dip for a full 6+ weeks since it should be assumed to a be an porous QT. The trick here is to kill the AEFEW and break the cycle of unhatched eggs/free swimming larvae.
No way to know if mine is successful as AWEFW may not reach detectable levels for several months after the re-boot.
I couple words of wisdom, the sock coming from the DT to "QT" (i put the QT in quotes as it's important to realize it is not a true QT) will clog fast unless you have a pre-filter, so be ready to change the sock every 3 days --it will overflow fast without any warning. (though, It's unlikely an overflow would represent a disaster, as water borne larva are probably minimal and you are still performing weekly dipping.) I would also QT/dip for a full 6+ weeks since it should be assumed to a be an porous QT. The trick here is to kill the AEFEW and break the cycle of unhatched eggs/free swimming larvae.
No way to know if mine is successful as AWEFW may not reach detectable levels for several months after the re-boot.
dg3147
Active member
Update...success?
Update...success?
I think it has worked. I ended up using a single 100 micron sock going into the QT and one coming out. Today I did a test dip in Coral Rx and zero AEFW noted on 4 corals. I have not dipped in anything in over a month.
Success? Time will tell I guess.
Update...success?
I think it has worked. I ended up using a single 100 micron sock going into the QT and one coming out. Today I did a test dip in Coral Rx and zero AEFW noted on 4 corals. I have not dipped in anything in over a month.
Success? Time will tell I guess.
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