Breeding Gold Stripe Maroon Clownfish

[Nanz]

<a href=showthread.php?s=&postid=15190516#post15190516 target=_blank>Originally posted</a> by jmckdvm
Would you mind explaining the flow of water within the Kreisel? I see green water in the cylinder and to the left of it, but don't see green water to the right of the cylinder. (I'm guessing it is there but not obvious in the photo). I'm trying to understand how water flows throughout the entire system.
Also, is the opening on the top of the cylinder a wide "slit" across the entire length of the cylinder?
Thank you for your reply and a wonderful thread!

The picture was taken right after I put Rotifer Feast in with the Rotifers and in time will go through the whole tank. I was trying to take the picture right in series when I put the rotifer feast in the kreisel so you could see the motion. That did not work as I planned, hehe.

The Kreisel is like a cradel that keeps the baby fish inside the water column and off the bottom or sides of the glass. The current from the kreisel is moderately strong around the sides but is calm in the center. This keeps the babies suspended in water along with the food.

Yes the top is a wide slit. I will take some more pics tonight since my husband is making another one for me, hehe.

 

[jmckdvm]

Thank you for your reply, but I'm still not clear on how water moves to and from the cylinder from the right side and left side. Is it just from simple diffusion? Is water pumped into the cylinder and flows through a screen (or screens) on the cylinder (on left and/or right side of cylinder)? (If so, is the water on the left "trapped" there, or does it circulate some way)?

Thanks again!

 

[rEd86]

The water is pumped out of the right side chamber, into the cylinder, which produces a swirling current and keeps the fry suspended. (the currently is stronger towards the outside of the cylinder, while calmer towards the center) The water leaves the cylinder via the screen opening that's on the left side and enters the chamber on the left. There is room underneath the cylinder that allows the water from the chamber on the left to flow over to the chamber on the right, where it repeats the process.

Nanz took that picture right after she dumped in the Rotifer Feast, which had only completed half of the journey. (she was going to document the whole process, which would have given us nice colored stages due to the Rotifer Feast, but that didn't work out.)

Hope that clears it up.

--Ed

 

[Nanz]

<a href=showthread.php?s=&postid=15195517#post15195517 target=_blank>Originally posted</a> by rEd86
The water is pumped out of the right side chamber, into the cylinder, which produces a swirling current and keeps the fry suspended. (the currently is stronger towards the outside of the cylinder, while calmer towards the center) The water leaves the cylinder via the screen opening that's on the left side and enters the chamber on the left. There is room underneath the cylinder that allows the water from the chamber on the left to flow over to the chamber on the right, where it repeats the process.

Nanz took that picture right after she dumped in the Rotifer Feast, which had only completed half of the journey. (she was going to document the whole process, which would have given us nice colored stages due to the Rotifer Feast, but that didn't work out.)

Hope that clears it up.

--Ed

Thanks, that is exactly correct. You explain it much better than I.

When I first put the Rotifer feast(Phyto) into the Kreisel you could see the motion of the green phyto swirl inside the kreisel before it become saturated which is what it looked like when I took the picture. If I would have taken a picture about 15 mins later the entire tank would have been green as it is now.

 

[jetfixr]

I am curious about the 90 micron screen on the kreisel. Are the rotifers staying contained or are they able to make it thru the screen? Do you find the screen is clogging and have to clean it often? Around how many GPH are you running in the kreisel? Sorry for all the questions, I am about to start building mine and I don't want it to end up in my "dead projects" pile in the garage.

 

[khoivo1]

my clown is gold strip maroon clown and the parent eat there eggs before they get ready to hatch,,,is that mean ,,,i need to feed the parent more offten?
how many day from the day they laying egg untill the start hatching?? i will start reading more since my english is a problem so its take me so long to learn,,thanks

 

[khoivo1]

look like i read some where its said 8th day then they hatch right?

 

[Nanz]

<a href=showthread.php?s=&postid=15197765#post15197765 target=_blank>Originally posted</a> by khoivo1
look like i read some where its said 8th day then they hatch right?

Mine hatch exactly 7 days from when the eggs were layed. She lays eggs every 3 days after they hatch so I have baby clown every 10 days. Its been that way for about 10 batches so far and has not changed one bit.

 

[Nanz]

<a href=showthread.php?s=&postid=15196276#post15196276 target=_blank>Originally posted</a> by jetfixr
I am curious about the 90 micron screen on the kreisel. Are the rotifers staying contained or are they able to make it thru the screen? Do you find the screen is clogging and have to clean it often? Around how many GPH are you running in the kreisel? Sorry for all the questions, I am about to start building mine and I don't want it to end up in my "dead projects" pile in the garage.

1) The rotifers are staying in the Kreisel. I can see them moving around in a cirlce in the kreisel.

2) The screen clogs pretty fast in about a couple hours. Mine clogged with mostly the phyto as its dark green. Its east to clean with a turkey baster.

3) I dont have an exact GPH but Im using a RIO-400 pump with a ball valve. The pump makes a bit of nois from being restricted but the water is coming out about 25-50 gph. Thats my best guess. I keep it at that speed so the fry can still swim in the Kreisel. If the current is too strong they will get swept up in the swirl.

Thank you for all the question, I enjoy sharing what I know about this project.

 

[Nanz]

So far these are the problems that I have experienced:

The screen is too small and needs to be 250 - 400 micron mesh. The Phyto can quickly clog the screen and the rots die of starvation. I try to feed live gut fed rots many times a day but it still my fry are dying of starvation. Today I counted about 5 left. The fry seem to have died from starvation but it could have been from my salinity drop of 1.025 - 1.020. I don't know but it seems to me the rots are starving because the phyto is being filtered and thus the clownfish are starving because the rots have no nutrients.

Once the screen clogs it seems to create a break in the seem. Im not sure because I cant see it but on Sunday I noticed that 90% of my fry were outside the kreisel. Im not sure how they escaped because I tested it and it was water tight. The only thing I can think of is that the mesh got separated from the plastic on the kreisel. I had used silicone to bond it. Im thinking if using a plexi-glass plate to secure it to the kreisel in the future.

I have another batch that will be ready this Sunday so I will try to make some modifactions and seen if I can keep the fry alive. The NH3 was low though and never cycled. It was 0.25 - 0.26 for the first 4 days. Im starting to wonder if this process will work well with clownfish since the phyto will always be clogging the screen. Perhaps it won't clog as much with a larger screen.

 

[rEd86]

Is that why your husband is building a new kreisel? (version 2, with improvements based on what you've learned so far)

--Ed

 

[Chad Vossen]

here's a pick of the kreisel that i made.

havnt tested it yet, but im sure i'll find some mistakes.

as far as your screen clogging, you need to direct more flow at the screen to "wash" it.

 

[Chad Vossen]

here's my larval collector as well,

 

[jetfixr]

Wow, lots of great info here... I guess the magical question for anyone who has built a kreisel before is what is the proper mesh size. If you go too large the rotifers and possibly the fry can escape thru it. And if you go too small and leave it unattended for more then a couple of hours, the screen clogs, the kreisel would overflow into the main tank and all the fry would escape. A smaller kreisel in a smaller tank might work. Using a 5 gallon tank with a good sponge filter and some larger mesh. That way you could stock the whole thing with rotifers and they could pass freely thru the mesh. You would just have to keep the population of rotifers up in the whole aquarium, not just the kreisel portion of it though.

 

[Nanz]

Hey armagedon48,

That is a really neat larva snaggler. Looks like you know a bit about acrylic. Awesome creation!

I actually got this idea from your post on another forum. I also saw some u-tube videos of similar builds and I decided to build mine out of another material but the same process.

I have a 1/2 Wide flare nozzle that is spraying some water on the screen but its not enough. If I up the flow it works really good except the fry look like they are in a huricane, hehe.

You should try yours out and see if it works. What size mesh did you put on your Kreisel?

 

[Chad Vossen]

120 micron nylon mesh is what i used for the tank. its small enough that rotifers cant pass through it.

 

[jetfixr]

how is the new kreisel working out for you nanz?

 

[Nanz]

<a href=showthread.php?s=&postid=15228754#post15228754 target=_blank>Originally posted</a> by jetfixr
how is the new kreisel working out for you nanz?

Im still waiting on a new clutch of eggs. Last batch hatched a day early and I missed it Hopefully she will lay new eggs this week so I can try again.

 

[Nanz]

I recently collected my next batch last night. I did not put them in the Kreisel though since my last batched seemed to die of starvation. I do believe that my mesh was too small and ended up filtering out the food and phyto for the rots. I think the Kreisel is great but for someone who can feed the fry every 3 hours with fresh food. Having a day job makes that impossible for me as many others who are growing clownfish as a hobby.

I ended up using my 5 gallon hex tank for the fry this time and so far they are doing great.

 

[TylerRt]

What did you put them in if you didnt use the Kreisel? I have a pair of clowns that im waiting to start breeding so everything that you have posted has been interesting to me. I been taking notes.