Hi!
I've got a tank (20 gal high) that is ALL (practically) algea (floating in the water). It now has Daphnia in it. Anything else I should add, like salt? Optimum pH to get a breeding colony? Just wondering!
Later!
Amanda.[/b]
[/b][/quote]Don't add salt, you'll kill the daphnia. When you do a water change or vacuum out the colony, replace with a little dissolved limestone or calcium chloride. Like sailfin mollies, daphnia like hard water.
Also, within a few days, they'll remove all the green algae from the water, even if you put the tank in direct sunlight. You'll need to find them something else to eat. The easiest thing to do is dissolve about a sixteenth to an eight teaspoon of bread yeast into a cup or two of water. You can feed every two or three days. Lots of people feed dilute solutions of sweet potatoes. (Baby food makes a really convenient solution, but Frank Cowherd makes his own solutions from fresh sweet potatoes.)
I keep a few Xiphophorus variatus on a window sill in a five gallon tank. The sunlight and the fish waste keep the water green. Every few days I pour a pint or so of green water into the culture.
Colonies often die off for no good reason. It would also be a good idea to remove a few daphnia from the tank and add them to another tank as a hedge against die offs.
<div class='quotemain'>Hi!
I've got a tank (20 gal high) that is ALL (practically) algea (floating in the water). It now has Daphnia in it. Anything else I should add, like salt? Optimum pH to get a breeding colony? Just wondering!
Later!
Amanda.[/b]
Um.... Don't mean to daught you, but they haven't even made a dent in the algae, and they have been reproducing, and I haven't started harvesting them yet.....
That tank is really really green!!!!! :happy0007:
Later!
Amanda.[/b]
I wanted to chime in since I have been able to keep a Daphnia culture growing for about a year now. It does slow down on occasion but then I just don't feed for a week and it grows back. I have them in a 5.5 gallon tank. I started this tank a week before getting the daphnia with water from water changes. (BE Careful - No water with salt or other treatments). I have tried several combinations but what seems to work best is to have some plant life in tank (small piece of Java moss seems to work well), snails are a must, they apparently discharge something that is beneficial to daphnia as they are cleaning the tank. Slow large air bubbles, I have a "T" at the end of a piece of tubing with about 2 bubbles per second and light 24 hours per day! I then have tried different feeding techniques but what seems to work is 2 drops of algae paste each day (I get mine from Brine Shrimp Direct), a pinch of "Daphnia Boost" from Karma Farm Aquatics once a week, and a few pieces of lettuce every 2 weeks or so. (this is for the snails to eat). I also have thrown in some BlueGreen algae that refuses to vacate 2 of my tanks. I am really not sure why all of these things seem to work but it appears that they are a good combination.
Hope this helps
Kurt[/b]
I'm sure he does!!!!!
When I asked dad if he was thinking of getting some daphnia, he said "probably not, they usually bid it up too high!!!"
Hey! Why don't one of you experienced daphnia keepers write a biotope article on it? Sounds like a good topic!!!
Later!
Amanda.[/b]