Daphnia

[fish48]

Yeast in nowhere as good as green water

ok so you say yeast is nowhere as good as green water because it fouls the water and there is no good idea what is too much. as I have mentioned when it comes to feeding yeast you need to be careful not to overfeed. it's all about understanding the use of yeast and getting the correct balance
there are many types of food that can be fed to daphnia and the success rate can be as good as feeding green water

 

[JohnnyReb]

ok so you say yeast is nowhere as good as green water because it fouls the water and there is no good idea what is too much. as I have mentioned when it comes to feeding yeast you need to be careful not to overfeed. it's all about understanding the use of yeast and getting the correct balance
there are many types of food that can be fed to daphnia and the success rate can be as good as feeding green water

Give me one...and tell the readers how much yeast (exactly) is correct for a 20 gallon tank in U.S. measurements. Green water no measurements are necessary.

 

[MaloK]

Give me one...and tell the readers how much yeast (exactly) is correct for a 20 gallon tank in U.S. measurements. Green water no measurements are necessary.

??? There's no measure... But there's a lots of indicators.

Too much variants... Colony size and density, growth rate, water quality and finally the type of yeast used.

I suggested yeast because I thought Matt needed something fast, I wasn't aware he had green water on hand.

 

[MattW]

I don't have green water on hand sadly The yeast suggestion, being used cautiously seems like a cost-effective feed to use IMO

 

[JohnnyReb]

??? There's no measure... But there's a lots of indicators.

Too much variants... Colony size and density, growth rate, water quality and finally the type of yeast used.

I suggested yeast because I thought Matt needed something fast, I wasn't aware he had green water on hand.

No measure is exactly the problem with yeast, you have to consult the Amazing Kreskin to get the answer to how much. You can't even quantify the turbidity with a Secchi disk. Green water, no measuring at all, but you can use a Secchi disk if you choose and it is foolproof

I don't have green water on hand sadly The yeast suggestion, being used cautiously seems like a cost-effective feed to use IMO

Water is free, or nearly free, depending on if you live where it rains? In the summer, set a 5 gallon bucket of water in the sun for a week and wala, green water.

 

[MaloK]

No measure is exactly the problem with yeast, you have to consult the Amazing Kreskin to get the answer to how much.

Easy:

 

[JohnnyReb]

Easy:

View attachment 357960

Easy:

View attachment 357960

He is all seeing and all knowing, RIP Amazing Kreskin.

 

[JohnnyReb]

Easy:

View attachment 357960

You so humor.

 

[fish48]

As we know green water is a natural food for daphnia, it's less likely to cause problems or crash, in the UK we don't get green water all year round in the summer months I occasionally get one or two green tanks that are facing a window obviously when available i will use it
however in my fish room I keep quite a few fish and have a good number of containers and fish tanks for breeding daphnia I would not be able to collect or create enough green water,
for many years I have cultivated and feed yeast to daphnia, problems can occur when feeding yeast and can be so easy to overfeed daphnia, the simple method that I use that works every time and doesn't matter what size container i use all I do is put a spoonful of bakers yeast in a jar top up with water put lid on and shake well into well mixed slowly pour yeast into tank until water goes slightly clouded so what you are looking for is to still see through the water to other side of tank, A part from using water Butts I use 60 L fish tanks and 35L plastic Barrows for daphnia moina, t's quick and easy to use fresh or dry yeast also cheap to buy,

 

[MaloK]

You so humor.

I'm a little worse between Christmas and the New Year... But.

Same for me here, a good part of the year is nearly impossible to have Green water.

 

[JohnnyReb]

As we know green water is a natural food for daphnia, it's less likely to cause problems or crash, in the UK we don't get green water all year round in the summer months I occasionally get one or two green tanks that are facing a window obviously when available i will use it
however in my fish room I keep quite a few fish and have a good number of containers and fish tanks for breeding daphnia I would not be able to collect or create enough green water,
for many years I have cultivated and feed yeast to daphnia, problems can occur when feeding yeast and can be so easy to overfeed daphnia, the simple method that I use that works every time and doesn't matter what size container i use all I do is put a spoonful of bakers yeast in a jar top up with water put lid on and shake well into well mixed slowly pour yeast into tank until water goes slightly clouded so what you are looking for is to still see through the water to other side of tank, A part from using water Butts I use 60 L fish tanks and 35L plastic Barrows for daphnia moina, t's quick and easy to use fresh or dry yeast also cheap to buy,

You can culture green water year round regardless of the temperature. Define Butts and Barrows...

 

[MattW]

You can culture green water year round regardless of the temperature. Define Butts and Barrows...

A water butt is the UK version of a rain barrel and a barrow is a wheelbarrow. Some designs can hold a decent amount of water.

 

[GaryE]

Okay, I like the fish you choose to breed. But as said above, Daphnia won't feed them. I have never been able to culture enough daphnia to feed my fish indoors. I can keep cultures going, but not in the necessary numbers. In summer outdoors, I can feed 30 tanks daily. But they are never fry food.

So you may have to take a loss.

I use krill fines for fish that start small. I put a steak knife point's worth into a pill vial with tank water, shake it vigourously with the cap on, then feed the liquid. Daphnia could eat that. But feeding the daphnia coud kill the Oryzias. I found daisy's rice fish fry easy to feed. They ate freshly hatched brine shrimp quickly, and are a good size for fry. You'll be able to get them onto crushed flake fast.

Yeast might do them in. You'd be playing with fire - yeast mixed with potato flower has been a good daphnia food here, but not in the same tank as fish.

 

[MattW]

Thanks for the info. I might just let the daphnia take its own course then. I will be getting some more inforusia today from a dirty aquarium sponge which should suffice for a few days. As for dry foods, I currently feed NT Labs microcrumb crushed in a pestle and mortar which the fry go mad for. The two larger fry that I had in that tank did go for the baby daphnia often but like you said the current fry are not at that size yet.

Ill just leave the daphnia alone then They seem to be doing ok with the little attention I give them anyway.

 

[gwand]

Thanks for the info. I might just let the daphnia take its own course then. I will be getting some more inforusia today from a dirty aquarium sponge which should suffice for a few days. As for dry foods, I currently feed NT Labs microcrumb crushed in a pestle and mortar which the fry go mad for. The two larger fry that I had in that tank did go for the baby daphnia often but like you said the current fry are not at that size yet.

Ill just leave the daphnia alone then They seem to be doing ok with the little attention I give them anyway.

Matt, what size sponge in what volume of water to start infusoria? How much do you give to new fry? For bottom dwellers, how do you get the infusoria to the substrate level where the fry are swimming? Thanks.